Isaac
| Name | Date | Header | Full name | Place of origin |
|---|---|---|---|---|
| Eisik | 1550 | Wachenheim | Eisik Wachenheim | Francfort |
| Isaac | 797 | Isaac | Isaac | |
| 977 | Isaac | Isaac | Narbonne | |
| 1135 | Treves | Isaac de Trèves | Cologne | |
| 1184 | Alcan | Elhanan ben Isaac | Dampierre | |
| 12th c. | Isaac | Isaac de Cerney | ||
| 1204 | Isaac | Isaac de Gonesse | Paris | |
| 1241 | Alphandery | Isaac ben Jeh. Alfandari | Espagne | |
| 1288 | Isaac | Isaac dit Haquin Chatelin | Troyes | |
| 13th c. | Theodore | Isaac ben Todros | Avignon | |
| 1305 | Cohen | Cohen Isaac | Manosque | |
| 1310 | Abravanel | Abravanel Isaac ben Jehuda | Séville | |
| 1387 | Wahl | Isaac der Welsch | Strasbourg | |
| 1446 | Benedic | Bendich Isaac | Arles | |
| 1473 | Emmerich | Isaac v. Emmerich | Francfort | |
| 1480 | Abravanel | Abravenel Isaac | Espagne | |
| 1565 | Isaac | Jehan Isaac | Bordeaux | |
| Isac | 1204 | Anglais | Isac Anglais de Gournay | Paris |
| Isack | 1558 | Wolf | Isack zum Wolff | |
| Isaquet | 13th c. | Isaac | Isaquet dans le Midi | |
| Jsaac | 10th c. | Hassid | Jsaac Hassid desc. de Siméon du Mans | |
| 1040 | Salman | Salomon ben Jsaac | Troyes | |
| 1103 | Fassi | Jsaac Alfassi | Lucena | |
| 1170 | Petit | Maistre Petit surnom de Jos. ben Jsaac Kimhi | ||
| 12th c. | Isaac | Jsaac de Corbeil | ||
| 12th c. | Monteux | Jsaac de Monteaux | ||
| 1204 | Bonnevie | Bonne-Vie ben Jsaac | Paris | |
| 1288 | Haquet | Jsaac Chatelain dit Haquin | Troyes | |
| 1294 | Maimon | Maymon Jsaac | Catalogne | |
| 13th c. | Habib | Jsaac ben Habib | Nîmes | |
| 1300 | Lattes | Jsaac de Lattès | Montpellier | |
| 1306 | Portal | Jsaac del Portal | ||
| 1375 | Rouget | Roget Jsaac | Valabrègue | |
| 1413 | Gabay | Gabay Jsaac | Perpignan | |
| 1467 | Lunel | Jsaac Lunel | Bourgie | |
| 15th c. | Nahmias | Nahmias Jsaac | Fes | |
| 1555 | Deutsch | Duetsch Jsaac | Bechtehim | |
| 1557 | Gard | Gard Jsaac | Lisle-sur-Sorgue | |
| 1567 | Rothschild | Jsaac Rothschild | Francfort | |
| 16th c. | Jais | Baruch ben Jsaac Ibn Yaïch | Espagne | |
| Jsaak | 1364 | Coblence | Jsaak von Coblenz | Francfort |
| Jsack | 1360 | Bing | Jsack de Bingen | Mayence |
| Ysaag | 1334 | Isaac | Ysaag de Buhswilre | Strasbourg |
| 1334 | Treine | Trinlin (relicta quondam Ysaag) | Strasbourg |