| Nom | Prénoms | M/F | Lieu de naissance | Date de naissance | Pays |
| IAGGI | Fridolin | M | Fulenbach (canton de Soleure) | 187512/05 | CH |
| IAGGI | Louis Olivier | M | Bellegarde (canton de Fribourg) | 1889/01/27 | CH |
| IBALDI | Albert | M | Abländschen commune de Saanen (canton de Berne) | 1885/04/13 | CH |
| IBALDI | Edmond Alphonse | M | Longirod (canton de Vaud) | 1895/06/15 | CH |
| IBRO | Karabašic | M | Banja Luka | 1902/06/11 | SRB |
| ICHTER | Jean Théophile | M | Markirch | 1882/10/26 | D |
| IDEC | Marianne | F | Kotawa-Wola | 1908/03/30 | PL |
| IDEC | Maya | M | Kotowa Idola | 1908/03/30 | PL |
| IDELMANN | Moïse | M | Kichinev | 1898/05/02 | RO |
| IELMINI | Antonio | M | Monbello (Italie) | 1881/06/26 | I |
| IERMANN | Eugène | M | Battenheim (Haut-Rhin) | 1858/07/18 | D |
| IFF | Berthe | F | Auswÿl (Suisse) | 1874/08/05 | CH |
| IFF | Rosa Marguerite | F | Locle (Le) (canton de Neuchâtel) | 1888/10/12 | CH |
| IFFENECKER | Eugène | M | Manspach (Haut-Rhin) | 1860/09/14 | D |
| IGERT | Marie Mélanie | F | Dannemarie (Hte Alsace) | 1847/07/03 | Als |
| IGLESIAS | Saturnino | M | Mogarraz (Salamanca) | 1893/02/08 | E |
| IGNATZ | Avram | M | Braila | 1902/07/28 | RO |
| IGONETTI | Jean Henri | M | Alagna (PV - Lombardie) | 1826/10/17 | I |
| IHLER | Marie Léontine | F | Thann (Haut-Rhin - France) | 1881/06/28 | Als |
| IJON | Giovanni | M | Settimo Vittone (TO - Piemont) | 1890/07/29 | I |
| IJON | Stéphano Domenico | M | Settimo Vittone (TO - Piemont) | 1885/11/09 | I |
| IKANIA | François | M | ? | 28/07/1905 | PL |
| ILG | Wilhelm | M | Salenstein (Thurgovie) | 1864/01/11 | CH |
| ILLANDI | Gino | M | Chiampo (VI - Vénétie) | 14/04/1907 | I |
| ILLINOFF | Afanasy | M | Elaterinodar | 1895/02/28 | RUS |
| ILTIS | Joseph Emile | M | Thann | 1884/07/11 | Als |
| ILTIS | Lin Luc | M | Kirchberg (Haut-Rhin) | 1852/03/02 | D |
| ILTIS | Maria | F | Markolsheim | 1881/10/04 | D |
| IMBERT | Marie Eugénie | F | Chaux de Fonds (La) (canton de Neuchatel) | 1861/03/03 | CH |
| IMBERTI | Pierre | M | Casinga (province de Novare) ? | 1864/09/25 | I |
| IMBODEN | Marie | F | Unterseen (canton de Berne) | 1858/07/29 | CH |
| IMER | Adolphe | M | Neuveville (La) (canton de Berne) | 1875/10/23 | CH |
| IMER | Emma Hélène | F | Abbévillers (Doubs – France) | 1893/06/14 | CH |
| IMHOF | Emma | F | Grenchen (canton de Soleure) | 1906/02/26 | CH |
| IMHOF | Jakob | M | Dimervyl (Suisse) | 1852/09/22 | CH |
| IMHOF | Jean | M | Brenets (Les) (canton de Neuchatel) | 1899/07/24 | CH |
| IMHOF | Josefa | F | Brigue (canton du Valais) | 1882/02/20 | CH |
| IMHOF | Marcel Aimé | M | Lausanne (canton de Vaud) | 1901/08/16 | CH |
| IMHOF | Martha | M | Grenchen (canton de Soleure) | 1898/07/27 | CH |
| IMHOF | Rose | F | Erven (canton du Valais) | 1850/06/09 | CH |
| IMHOFF | Auguste | M | Sulz (Soulz ??) Alsace | 1876/05/18 | Als |
| IMHOFF | Charles Henri Jules | M | Chaux de Fonds (La) (canton de Neuchatel) | 1881/07/16 | CH |
| IMHOFF | Joséphine | F | Brigue (canton du Valais) | 1882/02/20 | CH |
| IMHOFF | Lucie | F | Soyères (canton du Jura) | 1891/11/11 | CH |
| IMHOFF | X……… | M | Brigue (canton du Valais) | 1882/02/20 | CH |
| IMMELE | Rosine | F | Guebwiller (Alsace) | 1854/11/26 | Als |
| IMMELÉ | Louis | M | Hattstatt (Haut-Rhin) | 1867/11/15 | D |
| IMMORILLI | Maximilien | M | Bagno (AQ - Abruzzes) | 1850/12/10 | I |
| IMOFF (IMHOFF) | Victor | M | Ungersheim (Haut-Rhin) | 1856/11/18 | D |
| IMPELLEZZIRE | Pierre | M | Catania (CT - Sicile) | 1878/07/31 | I |
| IMPELLIZZIERI | Louis | M | Cesaro (ME - Sicile) | 1896/06/21 | I |
| IMPELLIZZIERI | Roland | M | Morez (Jura – France) | 1926/12/13 | I |
| IMPELLIZZIERI | Yolande Viviane | F | Rousses (Les) (Jura – France) | 1928/01/18 | I |
| IMPELLIZZIERI | Louis | M | Cesaro (ME - Sicile) | 1896/06/21 | I |
| IMPERATOLI | Diavole | M | Masciagot (Italie) | 1880/06/19 | I |
| IMPERIAL | Claude Joseph | M | Vaucluse (Doubs) | 1814/01/22 | I |
| IMPERIAL | Jean Baptiste | M | Vaucluse (Doubs) | 1816/11/22 | I |
| IMPERIALI | Edouard | M | Cassano | 1885/08/24 | I |
| IMPERIALI | Pasqual | M | Paris (Seine) | 1883/11/02 | I |
| IMPERIALI | Pasquale | M | Parigi (Italie) | 1884/06/17 | I |
| IMPROVISATI | Santo Félix | M | San Gregorio (6 communes) | 1900/10/31 | I |
| IMRE | Nagy | M | Almosd. (Russie) | 1875/05/28 | RUS |
| INABNIT | Auguste Adolphe | M | Aigle (canton de Vaud) | 1882/08/01 | CH |
| INÄBUIT | Christian | M | Locle (Le) (canton de Neuchâtel) | 1888/10/13 | CH |
| INCERTE | Severo | M | Podenzana (MS - Toscane) | 1887/09/11 | I |
| INCERTI | Battista | M | Bibbiano (RE – Emilie-Romagne) | 1876/00/00 | I |
| INCERTI | Jean | M | Podenzana (MS - Toscane) | 1879/00/00 | I |
| INCERTI | Joseph André Lucien | M | Aubagne (Bouches-du-Rhône – France) | 1900/01/09 | I |
| INCERTI | Luigi | M | Vetto (RE – Emilie-Romagne) | 1879/00/00 | I |
| INCERTI | Felice | M | Podenzana (MS - Toscane) | 1890/03/09 | I |
| INCHENETZKY | Alexandre | M | Smolensky | 1887/11/26 | RUS |
| INCOLARI | Luigi | M | Intra (NO - Piémont) | 1895/09/28 | I |
| INCUSI | Lorenzo | M | Tula (SS - Sardaigne) | 1891/08/10 | I |
| INDERMÜHLE | Marthe Elise | F | Lausanne (canton de Vaud) | 1906/07/11 | CH |
| INDERMUHLE dit DUMOULIN | Edouard Maurice | M | Brévine (La) (canton de Neuchâtel) | 1875/07/29 | CH |
| INFANTE | François | M | Villaneva de la Vero | 1891/08/17 | ? |
| INFANTI | Antoine | M | Sesto al Reghena (PO - Frioul Vénétie Julienne) | 1896/07/29 | I |
| INFER | Ernest | M | Langnau (2 communes) | 1883/12/25 | CH |
| INGIGNOLI | Jeanne Marie | F | Pontarlier (Doubs - France) | 1897/07/31 | I |
| INGIGNOLI | Joseph André | M | Pontarlier (Doubs - France) | 1894/02/16 | I |
| INGLI | André Jean | M | Morteau (Doubs – France) | 1917/09/24 | CH |
| INGLI | Charles | M | Müllheim (canton de Thurgovie) | 1865/02/23 | CH |
| INGLI | Charles | M | Müllheim (canton de Thurgovie) | 1891/04/30 | CH |
| INGLI | Edmond Eugène | M | Morteau (Doubs – France) | 1917/09/24 | CH |
| INGLI | Georges Louis | M | Morteau (Doubs – France) | 1922/11/16 | CH |
| INGLI | Jean | M | Bronschhofen (canton de St Gall) | 1894/07/19 | CH |
| INGLI | Jean | M | Schwytz (canton de Schwytz) | 1894/06/23 | CH |
| INGLI | Madeleine Simonne | F | Morteau (Doubs – France) | 1919/12/18 | CH |
| INGLI | Marie | F | Buchs (3 communes) | 1902/12/17 | CH |
| INGLI | Maurice Léon Noël | M | Morteau (Doubs – France) | 1924/12/24 | CH |
| INGLI | Pauline | F | Mühlehorn (canton de Glaris) | 1897/04/10 | CH |
| INGLI | Rosa | F | Freienbach (canton de Schwytz) | 1895/03/18 | CH |
| INGLI | Sophie | F | Wangen (canton de Schwyz) | 1888/05/19 | CH |
| INGOLD | Cécile Fanny | F | Chaux de Fonds (La) (canton de Neuchatel) | 1886/04/22 | CH |
| INHELDER | Fanny | F | Nesslau (canton de St Gall) | 1894/07/25 | CH |
| INMELE | Victorine | F | Colmar (Alsace) | 1871/01/05 | Als |
| INNA | Jean | M | Morgano (TV - Vénétie) | 1879/08/04 | I |
| INNOCENTI | Bruno | M | Stia (AR - Toscane) | 1893/03/05 | I |
| INNOCENTI | Eugène Joseph | M | Stia (AR - Toscane) | 1898/08/30 | I |
| INNOCENTI | Eugénio | M | Stia (AR - Toscane) | 1895/08/27 | I |
| INNOCENTI | Frédéric Jean | M | Ardenno (SO - Lombardie) | 1904/03/30 | I |
| INNOCENTI | Guido | M | Frerola (BG - Lombardie) | 1886/09/10 | I |
| INNOCENTI | Juliette | F | Saint-Claude (Jura - France) | 1910/06/10 | I |
| INNOCENTI | Livi Antonio | M | Portovecchio di Portogruaro (VE – Vénétie) | 1862/08/12 | I |
| INNOCENTI | Livi Guilio | M | Poppi (AR - Toscane) | 1896/00/00 | I |
| INNOCENTI | Nello | M | Aigle (canton de Vaud - Suisse) | 27/09/1911 | I |
| INNOCENTI | Pasquale | M | Capolona (AR - Toscane) | 1858/12/22 | I |
| INTILLIA | Remigio | M | Lanco ? | 09/12/1901 | I |
| INTROÏNI | Emilio | M | Vittuone (MI - Lombardie) | 1896/01/19 | I |
| INTROMI | Severo | M | Vittuone (MI - Lombardie) | 1890/02/24 | I |
| INTZELER | Paul Vital | M | Vaulion (canton de Vaud) | 1883/11/16 | CH |
| INVERNICI | Antonio | M | Bedulita (BG - Lombardie) | 1887/03/09 | I |
| INVERNIZZI | Antoine | M | Moggio (CO - Lombardie) | 1835/07/18 | I |
| INVERNIZZI | Baptiste | M | Juigiana (province de Bergame) ? | 1894/07/15 | I |
| INVERNIZZI | Carlo | M | Zelbio (Italie) | 1871/06/17 | I |
| INVERNIZZI | Célestin | M | Locatello (BG - Lombardie) | 1880/07/28 | I |
| INVERNIZZI | Defendenti Joseph | M | Bargio (CO - Lombardie) | 1879/01/27 | I |
| INVERNIZZI | Georges Angel | M | Moggio (CO -Lombardie) | 1887/07/30 | I |
| INVERNIZZI | Giuseppe Pietro | M | Moggio (CO -Lombardie) | 1893/07/24 | I |
| INVERNIZZI | Jean Marie | M | Moggio (CO - Lombardie) | 1848/00/00 | I |
| INVERNIZZI | Joseph | M | Moggio (CO - Lombardie) | 1877/00/00 | I |
| INVERNIZZI | Joseph Paul | M | Barzio (CO - Lombardie) | 1886/06/18 | I |
| INVERNIZZI | Judith Santina | F | Moggio (CO -Lombardie) | 1879/06/14 | I |
| INVERNIZZI | Louis | M | Selino (BG - Lombardie) | 1904/10/06 | I |
| INVERNIZZI | Louis | M | Moggio (CO -Lombardie) | 1888/07/06 | I |
| INVERNIZZI | Louis | M | Rancio (Italie) | 1877/01/22 | I |
| INVERNIZZI | Louis Mirocle | M | Moggio (CO -Lombardie) | 1883/12/02 | I |
| INVERNIZZI | Marguerite Augusta Eugénie | F | Saint Claude (Jura – France) | 1925/09/18 | I |
| INVERNIZZI | Marie Antoinette | F | Saint Claude (Jura – France) | 1924/04/18 | I |
| INVERNIZZI | Marie Carmelina | F | Moggio (CO -Lombardie) | 1890/03/26 | I |
| INVERNIZZI | Marie Catherine | F | Barzio (LE - Lombardie) | 1875/04/24 | I |
| INVERNIZZI | Moïse | M | Fuipiano al Brembo (BG - Lombardie) | 12/03/1904 | I |
| INVERNIZZI | Pascal | M | Moggio (CO -Lombardie) | 1876/01/02 | I |
| INVERNIZZI | Pierre | M | Fuipiano Valle Imagna (BG - Lombardie) | 1899/07/14 | I |
| INVERNIZZI | Pietro | M | Trecate (NO - Piemont) | 1890/06/10 | I |
| INVERNIZZI | Sylvestre | M | Selino (BG - Lombardie) | 1897/01/03 | I |
| INVERNIZZI | Georges Angel | M | Moggio (CO - Lombardie) | 1887/07/30 | I |
| INVERNIZZI | Giovanni Martino | M | Valsecca (BG - Lombardie) | 1898/08/07 | I |
| INVERNIZZI | Joseph Paul | M | Barzio (CO - Lombardie) | 1886/06/18 | I |
| INVERNIZZI ? | Amida | F | Velice de Cornaglia ? | 1899/04/01 | I |
| INWYLER | Oscar | M | Lucerne (canton de Lucerne) | 1892/02/19 | CH |
| IODAR CARRILLO | Pedro | M | Mojacar | 1880/07/15 | E |
| ION | Domenico | M | Settimo Vittone (TO - Piemont) | 1890/07/29 | I |
| ION | Giovanni | M | Settimo Vittone (TO - Piemont) | 1894/03/27 | I |
| ION | Jean Constantin Félix | M | Settimo Vittone (TO - Piemont) | 1894/03/28 | I |
| ION IULON | Ettore | M | Piedicavallo (BI - Piemont) | 1905/09/20 | I |
| IONI | Donato | M | Piobbico (PS - Marches) | 1908/07/12 | I |
| IONICO | Vito | M | Novare (NO - Piemont) | 1877/04/11 | I |
| IOPITI | Marie Thérèse | F | Carona (canton du Tessin – Suisse) | 1891/03/24 | I |
| IORETTI | Rinaldo Elio | M | Ghiffa (NO - Piemont) | 1900/02/07 | I |
| IOSS | Hélène Léa Marie | F | Valentigney (Doubs – France) | 25/09/1929 | CH |
| IOSS | Henri Robert | M | Valentigney (Doubs – France) | 28/06/1926 | CH |
| IOSS | Jules Albert | M | Saicourt (canton de Berne) | 1898/08/14 | CH |
| IOSS | Philippe Albert | M | Valentigney (Doubs – France) | 30/10/1924 | CH |
| IOST | Sophie | F | Dorlisheim (Alsace) | 1874/10/27 | D |
| IOTTI | Battisto | M | Nebbuino (NO - Piemont) | 1881/05/31 | I |
| IOTTI | Giuseppa | F | Cadelbosco di Sopra (RE – Emilie-Romagne) | 1857/00/00 | I |
| IPOLLITE | Rachelle | F | Berbenno (BG - Lombardie) | 1900/07/04 | I |
| IPPOLITI | Angel | M | Berbenno (BG - Lombardie) | 1889/10/24 | I |
| IPPOLITI | Joseph | M | Berbenno (BG - Lombardie) | 1895/07/25 | I |
| IPPOLITO | Joseph Louis | M | Binche | 1891/03/15 | B |
| IRETIER | Camille | M | Chârité (La) (canton du Valais) ? | 1886/07/30 | CH |
| IRGIERSKI | Michel | M | Uzbloc | 1905/03/11 | PL |
| IRR | Albert | M | Schwobsheim (Bas-Rhin) | 1865/07/22 | D |
| IRVINE | Charlotte | F | Southerndown (Galle du Sud) | 1904/07/10 | GB |
| ISAAC | Alfred Charles | M | Paris (Seine) | 1850/05/08 | B |
| ISAAZ | Félix | M | Etragnières (canton de Vaud) | 1884/07/11 | CH |
| ISABELLA | Carlo | M | Musadino (VA - Lombardie) | 1901/10/21 | I |
| ISABELLA | Ludovic | M | Musadena (province de Côme) ? | 1884/09/23 | I |
| ISABELLA | Marie Catherine | F | Vogogna (NO - Piemont) | 1872/12/08 | I |
| ISABELLON | Sulpice | M | Saint-Vincent (AO - Val D'Aoste) | 1900/04/29 | I |
| ISAÜA | Domenico | M | Militello ? | 1885/08/14 | I |
| ISCLI | Frédéric | M | Mühleberg (canton de Berne) | 1864/03/20 | CH |
| ISELI | Ernest | M | Ferembalm (canton de Berne) | 1883/06/26 | CH |
| ISELI | Oscar | M | Finsterhennen (canton de Berne) | 1872/04/20 | CH |
| ISELI | Samuel | M | Kleingümenson (canton de Berne) ? | 1887/05/31 | CH |
| ISELY | Léon | M | Cortaillod (canton de Neuchatel) | 1876/11/25 | CH |
| ISENBART | Marie Charles Léon | M | Besançon (Doubs) | 1849/06/19 | D |
| ISENBART | Victor Marie Emile | M | Besançon (Doubs) | 1846/03/03 | D |
| ISEPPI | Albino | M | Valvestino (BS - Lombardie) | 1922/11/08 | I |
| ISLER | Edouard | M | Lucerne (canton de Lucerne) | 1903/04/27 | CH |
| ISLER | Emile | M | Richtersweil (Suisse) | 1879/09/06 | CH |
| ISLER | Ferdinand | M | La Chaux-de-Fonds (canton de Neuchâtel) | 1868/02/28 | CH |
| ISLER | Marie Bertha | F | Bôle (canton de Neuchatel) | 1878/11/27 | CH |
| ISLI | Frédéric | M | Payerne (Suisse) | 1867/03/06 | CH |
| ISMAND | Maria | F | Münster-Geschinen (canton du Valais) | 1883/10/06 | CH |
| ISNER | Adolphe | M | Guebwiller (Alsace) | 1876/03/20 | Als |
| ISNER | Emile | M | Mulhouse (Haut-Rhin - France) | 1876/06/06 | D |
| ISNER | François Xavier | M | Rouffach | 1877/12/14 | Als |
| ISNER | Rodolphe | M | Rouffach | 1876/03/20 | D |
| ISONI | Antoinette | F | Tezze Sul Brenta (VI - Vénétie) | 1889/05/14 | I |
| ISOZ | Félix | M | Bex (canton de Vaud) | 1884/08/02 | CH |
| ISRAEL | Emma Emilie | F | Brudergemeine | 1870/10/04 | D |
| ISSEMANN | Lina Caroline | F | Bussurel (Haute-Saône - France) | 1897/08/11 | I |
| ISSENSCHMID | Aimé Joseph | M | Belleherbe (Doubs) | 1857/08/20 | ? |
| ITEN | Meinrad | M | Unteraegeri (Suisse) | 1863/01/22 | CH |
| ITTEN | Achille Marcel | M | Saint Imier (canton de Berne) | 1892/11/24 | CH |
| ITTEN | Armand | M | Spiez (canton de Berne) | 1873/08/13 | CH |
| ITTEN | Fritz | M | Bienne (canton de Berne) | 1878/04/24 | CH |
| ITTNER | Raymond | M | Vienne | 1883/04/13 | A |
| ITTY | Joseph | M | Anvers | 1865/00/00 | B |
| ITTY | Maria | M | Lavena Ponte Tresa (VA - Lombardie – Italie) | 1874/05/19 | B |
| ITUR | Rodolphe | M | Unterägeri (canton de Zoug) | 1880/08/29 | CH |
| ITZSTEIN | Charles | M | Montbéliard (Doubs) | 1871/11/27 | ? |
| IVALDI | Lina | F | Fribourg (canton de Fribourg – Suisse) | 1896/02/03 | I |
| IVANCIK | Héléna | F | Drazovce | 1910/06/28 | CZ |
| IVANECK | Jean | M | Ryarka Gorna | 1887/11/05 | PL |
| IVANOFF | Alexandre | M | Stanitza-Oustié | 1895/04/17 | RUS |
| IVANOFF | Alexandre | M | Novgorot-Gouberghe | 1891/01/17 | RUS |
| IVANOFF | Alexis | M | Moscou | 1893/03/17 | RUS |
| IVANOFF | Jean | M | Ivanowska | 1897/06/24 | RUS |
| IVANOFF | Marie | F | Nicolaüpf (Russie) | 1859/07/04 | CH |
| IVANOFF | Nicolas | M | Olnovo | 1895/11/23 | RUS |
| IVANTCHENKO | Alexandre | M | Hikopol | 19/12/1900 | RUS |
| IVENITZKI | Bernard | M | Slonim | 1879/08/22 | RUS |
| IVOL | André | M | Chianoc (TO - Piémont) | 1874/00/00 | I |
| IVOL | Boniface | M | Chianoc (TO - Piemont) | 1847/05/14 | I |
| IVOL | Dominique | M | Chianoc (TO - Piémont) | 1875/06/14 | I |
| IVOL | Eugène | M | Saint Claude (Jura – France) | 1925/04/29 | I |
| IVOL | Félix | M | Chianocco (TO - Piemont) | 1886/05/04 | I |
| IVOL | Frédéroc | M | Chianoc (TO - Piemont) | 1876/10/30 | I |
| IVOL | Georges Maurice | M | Saint Claude (Jura – France) | 1922/09/17 | I |
| IVOL | Giovanni Vincenzo | M | Chianoc (TO – Piemont) | 1898/06/19 | I |
| IVOL | Ida | F | Chianoc (TO – Piemont) | 1922/01/22 | I |
| IVOL | Louis François | M | Chianoc (TO - Piémont) | 1875/03/28 | I |
| IVOL | Marcellin Julien | M | Chianoc (TO – Piemont) | 1891/12/14 | I |
| IVOL | Mariano | F | Susa (TO - Piemont) | 1882/08/22 | I |
| IVOL | Pierre | M | Chianoc (TO - Piémont) | 1879/08/29 | I |
| IVOL | René Louis | M | Saint Claude (Jura – France) | 1920/08/30 | I |
| IVOL | Stanislas | M | Chianoc (TO - Piemont) | 1850/00/00 | I |
| IVOL | Venanzio | M | Chianoc (TO - Piemont) | 1912/05/28 | I |
| IVOL | Vincent | M | Chiaux ? | 1880/00/00 | I |
| IVOL | Giacomo Silvino | M | Chianocco (TO - Piemont) | 1907/07/22 | I |
| IVORRA ROMA | Félix | M | Benidorem (province d'Alicante) | 1868/02/27 | E |
| IZQUIERDO | Nicole | F | Mières | 1927/08/11 | E |