| NOM | Date debut | Date fin | COMMUNES | DEP. | ADHERENT N° |
| TABARD | 1658 | 1658 | Brains | 44 | 207 |
| TABARD | 1686 | 1686 | Saint Jean de Boiseau | 44 | 207 |
| TABARY | ---- | 1702 | ---- | 44 | 1 D |
| TABARY | 1655 | 1655 | Guérande | 44 | 346 |
| TABARY | 1680 | ---- | Guérande | 44 | 270 |
| TABARY | 1768 | 1841 | Guérande | 44 | 206 |
| TABARY | 1779 | 1811 | Mesquer | 44 | 211 |
| TABARY | 1681 | 1721 | Saint Lyphard | 44 | 346 |
| TACONNE | 1800 | 1900 | Crossac | 44 | 244 |
| TACONNE | 1800 | 1900 | St Joachim | 44 | 244 |
| TACONNET | ---- | ---- | ---- | ---- | 80 |
| TACONNET | 1616 | ---- | Montoir de Bretagne | 44 | 9 |
| TAHET | 1714 | 1743 | Indre | 44 | 9 |
| TAILLANDIERE | ------ | ------ | ------ | 44 | 269 |
| TAINGUY | 1706 | 1758 | Missillac | 44 | 221 |
| TANGUY | 1815 | 1903 | Guidel | 56 | 84 |
| TANGUY | 1890 | 1890 | Queven | 56 | 84 |
| TARANTE | 1842 | 1899 | Laval | 53 | 223 |
| TARAS | 1800 | ---- | Mesquer | 44 | 156 |
| TARDIVAU | 1653 | ---- | Lavau sur Loire | 44 | 270 |
| TARTOUE | 1645 | 1702 | St Nazaire | 44 | 270 |
| TASSE | ---- | 1638 | Besné | 44 | 9 |
| TASSE | 1700 | ---- | Bouée | 44 | 270 |
| TASSE | 1634 | 1690 | Campbon | 44 | 207 |
| TASSE | 1620 | ---- | Campbon | 44 | 158 |
| TASSE | ------ | ------ | ------ | 44 | 269 |
| TATARD | 1850 | 1850 | Sixt sur Aff | 35 | 229 |
| TATIBOUET | 1681 | 1728 | Arradon | 56 | 243 |
| TATIBOUET | 1686 | 1686 | Plougoumelen | 56 | 243 |
| TATIN | ---- | 1792 | Plouagat | 22 | 206 |
| TATTEVIN | 1801 | 1860 | Mesquer | 44 | 211 |
| TAUNAY | 1830 | 1880 | La Ferriere de Flée | 49 | 223 |
| TAUPIN | 1727 | 1727 | St Vincent des Landes | 44 | 243 |
| TAUPIN | 1883 | 1969 | Visseiche | 35 | 223 |
| TAVERSON | 1923 | 1975 | Escoublac,Marzan | 44 | 277 |
| TAVERSON | 1923 | 1975 | Marzan | 56 | 277 |
| TEFFO | 1703 | 1828 | Piriac | 44 | 165 |
| TEFFO | 1738 | 1828 | St André des Eaux | 44 | 1 D |
| TEFFO | 1703 | 1828 | St Molf | 44 | 165 |
| TEMPLIER | 1924 | 1991 | Paulx | 44 | 277 |
| TEMPLIER | 1801 | 1801 | Saint-Viaud | 44 | 243 |
| TEMPLIER | 1924 | 1991 | St Sébastien sur Loire | 44 | 277 |
| TENDRON | 1707 | 1732 | Orvault | 44 | 122 |
| TERRIEN | ---- | ---- | ---- | ---- | 80 |
| TERRIEN | 1775 | 1818 | ---- | ---- | 271 |
| TERRIEN | 1779 | 1779 | Guérande | 44 | 200 |
| TERRIEN | 1779 | 1813 | Guérande | 44 | 346 |
| TERRIEN | 1629 | ---- | Guérande | 44 | 270 |
| TERRIEN | 1749 | 1779 | Guérande | 44 | 206 |
| TERRIEN | 1803 | 1938 | Herbignac | 44 | 200 |
| TERRIEN | ---- | ---- | St Lyphard | 44 | 206 |
| TERRIENNE | 1638 | 1638 | Campbon | 44 | 207 |
| TERWAGNE | 1841 | 1883 | Forrières Belgique | B | 5 |
| TERWAGNE | 1812 | 1841 | Jemelle Belgique | B | 5 |
| TERWAGNE | 1848 | 1853 | Rochefort Belgique | B | 5 |
| TESNIERE | 1624 | 1624 | Donges | 44 | 122 |
| TESSIER | 1797 | 1995 | Prinquiau | 44 | 217 |
| TESSIER | 1854 | 1999 | Prinquiau | 44 | 221 |
| TESSIER | 1854 | 1999 | Saint Nazaire | 44 | 221 |
| TETIER | 1841 | 1841 | Le Croisic | 44 | 243 |
| TEXIER | ---- | ---- | ---- | -- | 9 |
| TEXIER | ---- | 1677 | Bouee | 44 | 171 |
| THABOT | 1748 | 1748 | Nivillac | 56 | 347 |
| THAUBIE | 1663 | 1663 | Missillac | 44 | 5 |
| THAUBIE | 1687 | 1711 | Pontchateau | 44 | 5 |
| THAUBIE | 1699 | 1699 | Saint Dolay | 56 | 5 |
| THAUBY | 1702 | 1971 | Miissillac | 44 | 165 |
| THAUBY | 1702 | 1971 | St Nazaire | 44 | 165 |
| THAUMOUX | 1823 | 1860 | Rieux | 56 | 154 |
| THAUMOUX | 1866 | 1985 | Rieux | 56 | 173 |
| THEBAUD | 1711 | 1742 | Redon | 35 | 207 |
| THIBOUT | 1762 | 1807 | Epinay | 93 | 5 |
| THIEFFRY | 1762 | 1830 | Baisieux | 59 | 165 |
| THIEFFRY | 1762 | 1830 | Willems | 59 | 165 |
| THIERRY | 1800 | 1832 | Aubervilliers | 93 | 5 |
| THIERRY | 1770 | 1778 | La Courneuve | 93 | 5 |
| THIERRY | 1705 | 1848 | La Croix Saint-Ouen | ---- | 311 |
| THIMON | 1831 | 1918 | Donges | 44 | 122 |
| THIMON | 1783 | 1816 | Montoir de Bretagne | 44 | 122 |
| THIMON | 1745 | 1745 | Saint Nazaire | 44 | 122 |
| THOBIE | 1589 | 1727 | Besné | 44 | 9 |
| THOBIE | 1780 | 1871 | Escoublac | 44 | 277 |
| THOBIE | 1910 | 1910 | Férel | 56 | 200 |
| THOBIE | 1834 | 1834 | Herbignac | 44 | 240 |
| THOBIE | 1794 | 1794 | Herbignac | 44 | 200 |
| THOBIE | 1780 | 1871 | Herbignac | 44 | 277 |
| THOBIE | 1811 | 1865 | Missillac | 44 | 200 |
| THOBIE | 1729 | 1810 | Missillac | 44 | 165 |
| THOBIE | 1884 | 1884 | Nivillac | 56 | 200 |
| THOBIE | 1780 | 1871 | St André des Eaux | 44 | 277 |
| THOBIE | 1780 | 1871 | St Nazaire | 44 | 277 |
| THOBY | ---- | 1698 | Besné | 44 | 206 |
| THOBY | 1702 | 1971 | Missillac | 44 | 165 |
| THOBY | 1702 | 1971 | St Nazaire | 44 | 165 |
| THOMAS | 1600 | ---- | Campbon | 44 | 158 |
| THOMAS | 1732 | 1768 | Férel | 56 | 200 |
| THOMAS | 1829 | 1829 | Guer | 56 | 84 |
| THOMAS | 1849 | 1877 | Lanfains | 22 | 171 |
| THOMAS | ---- | ---- | Locoal Mendon | 56 | 9 |
| THOMAS | 1696 | 1755 | Malville | 44 | 5 |
| THOMAS | 1778 | 1795 | Pesnetin | 56 | 80 |
| THOMAS | 1642 | 1719 | Plessé | 44 | 269 |
| THOMAS | ---- | 1971 | Pornichet | 44 | 277 |
| THOMAS | 1670 | 1702 | Saint Joachim | 44 | 85 |
| THOMAS | 1849 | 1877 | Savenay | 44 | 171 |
| THOMAS | 1690 | ---- | St Nazaire | 44 | 270 |
| THOMAS | ---- | 1971 | St Nazaire | 44 | 277 |
| THOMAZO | 1760 | 1822 | Larre | 56 | 211 |
| THOMERE | 1667 | 1824 | Guérande | 44 | 165 |
| THOMINEL | 1600 | 1600 | Rougé | 44 | 243 |
| THOMPSON | 1927 | 1983 | Iles Samoa,Nouméa | ---- | 277 |
| THOUROUDE | 1811 | 1816 | Mannevilles/Risle | 27 | 84 |
| THOUROUDE | 1788 | 1791 | Rouen | 76 | 84 |
| THUAL | 1805 | 1867 | Donges | 44 | 122 |
| THUAUD | 1684 | 1746 | St André des Eaux | 44 | 1 D |
| THUILLIEZ | 1738 | 1800 | Lens | 62 | 211 |
| THUILLY | 1738 | 1800 | Lens | 62 | 211 |
| TIERCELIN | 1725 | 1725 | La Bohalle | 49 | 207 |
| TIERCELIN | 1746 | 1751 | Mazé | 49 | 207 |
| TIERCELIN | 1770 | 1770 | Saint Mathurin sur Loire | 49 | 207 |
| TILLY | ---- | 1803 | ---- | 22 | 206 |
| TILLY | 1855 | 1937 | Herbignac | 44 | 240 |
| TILLY | 1771 | 1783 | Herbignac | 44 | 347 |
| TILLY | 1774 | 1774 | La Roche Bernard | 56 | 347 |
| TILLY | 1791 | 1791 | Nivillac | 56 | 347 |
| TINLOT | 1906 | 1988 | Rennes | 35 | 311 |
| TO((H)AU)BIE | 1777 | 1803 | Férel | 56 | 347 |
| TO((H)AU)BIE | 1962 | 1973 | Guérande | 44 | 347 |
| TO((H)AU)BIE | 1961 | 1961 | Herbignac | 44 | 347 |
| TO((H)AU)BIE | 1746 | 1965 | Nivillac | 56 | 347 |
| TO((H)AU)BIE | 1936 | 1998 | Piriac | 44 | 347 |
| TO((H)AU)BIE | 1988 | 1988 | Saint-Herblain | 44 | 347 |
| TO((H)AU)BIE | 1963 | 1963 | Saint-Molf | 44 | 347 |
| TORLAI | 1780 | 1845 | Nantes | 44 | 243 |
| TORLAY | ---- | 1827 | Rieux | 56 | 154 |
| TORRES | 1949 | 1949 | Manille (Philippines) | -- | 277 |
| TORRES | 1949 | 1949 | Paris | 75 | 277 |
| TORZEC | 1726 | 1749 | Escoublac | 44 | 1 D |
| TORZEC | 1890 | 1925 | Escoublac | 44 | 277 |
| TORZEC | 1746 | 1861 | St André des Eaux | 44 | 1 D |
| TORZEC | 1726 | 1749 | St André des Eaux | 44 | 1 D |
| TORZEC | 1890 | 1925 | St André des Eaux | 44 | 277 |
| TOSELLO | 1874 | 1907 | Alger (Algérie) | ---- | 274 |
| TOSELLO | 1904 | 1932 | Tabarka (Tunisie) | ---- | 274 |
| TOULARCOAT | 1866 | 1866 | Tregunc | 29 | 243 |
| TOULLIOU | 1801 | 1821 | Quimperlé | 29 | 84 |
| TOULLIOU | 1823 | 1823 | Redené | 29 | 84 |
| TOUPEL | 1789 | 1898 | Guenrouët | 44 | 159 |
| TOUPIN | 1874 | 1874 | Nantes | 44 | 9 |
| TOUPIN | 1847 | 1847 | Pleumeur Gautier | 22 | 9 |
| TOUPIN | 1665 | 1816 | Ploëzal | 22 | 9 |
| TOUPIN | 1636 | 1928 | Runan | 22 | 9 |
| TOUPIN | 1901 | 1928 | St Nazaire | 44 | 9 |
| TOUPLIN | 1832 | 1939 | Athée | 53 | 223 |
| TOUPLIN | 1832 | 1939 | Bouchamps les Craon | 53 | 223 |
| TRAGOUET | ------ | ------ | ------ | 44 | 269 |
| TRAIN | ---- | 1878 | La Rochelle | 17 | 211 |
| TRAMBLAY | 1696 | 1778 | ---- | 44 | 158 |
| TRAMBLAY | 1617 | 1689 | Quilly | 44 | 5 |
| TRANCHAND | 1669 | 1681 | Prinquiau | 44 | 5 |
| TRASBOT | 1704 | 1738 | La Ferté Saint Aubin | 45 | 274 |
| TREBEDEN | 1824 | 1824 | Plouizy Guingand | 22 | 9 |
| TREBEDEN | ---- | 1802 | Pommerit Jaudy | 22 | 9 |
| TREGRET | 1600 | 1700 | Campbon | 44 | 158 |
| TREGRET | 1732 | 1813 | La Clle Launay | 44 | 269 |
| TREGRET | 1695 | 1695 | Savenay | 44 | 207 |
| TREMBLAY | 1726 | 1726 | Campbon | 44 | 207 |
| TREMBLAY | 1721 | 1769 | Campbon | 44 | 5 |
| TREMBLAY | 1692 | 1692 | Quilly | 44 | 207 |
| TREMBLAY | 1645 | 1711 | Quilly | 44 | 5 |
| TREMELOT | 1724 | 1753 | Le Croisic | 44 | 243 |
| TREMONDAT | ---- | 1789 | Elven | 56 | 80 |
| TREMOUREUX | 1749 | 1749 | Bains sur Oust | 35 | 207 |
| TREMOUREUX | 1767 | 1858 | Donges | 44 | 122 |
| TREMOUREUX | 1793 | 1793 | Redon | 35 | 207 |
| TRESSE | 1738 | 1738 | Rougé | 44 | 243 |
| TRESSE | 1704 | 1704 | St Aubin des Châteaux | 44 | 243 |
| TREVARIN | 1806 | 1999 | Scaer | 29 | 244 |
| TREVARIN | 1806 | 1999 | St Nazaire | 44 | 244 |
| TRIBOY | 1852 | 1869 | Les Barils Par Verneuil sur Avre | 27 | 351 |
| TRICHET | 1711 | 1784 | St Julien Des Landes | 85 | 207 |
| TRIGNEAU | 1680 | 1680 | Mazé | 49 | 207 |
| TRIGNEAU | 1696 | 1696 | Saint Mathurin sur Loire | 49 | 207 |
| TRIGODET | 1862 | 1886 | Herbignac | 44 | 347 |
| TRIGODET | 1746 | 1823 | Herbignac | 44 | 80 |
| TRIGODET | 1652 | 1671 | Missillac | 44 | 221 |
| TRILLARD | 1829 | 1830 | Moisdon la Rivière | 44 | 243 |
| TRIMAUD | 1673 | 1673 | Guérande | 44 | 165 |
| TRINQUARD | 1853 | ----- | Paris | 75 | 331 |
| TROFFIGUE | 1872 | 1942 | Saint-Molf | 44 | 240 |
| TROFFIGUE | ---- | ---- | St Lyphard | 44 | 206 |
| TROFFIGUÉ | 1663 | 1742 | Saint Lyphard | 44 | 346 |
| TROFIGUE | 1784 | 1896 | Mesquer | 44 | 211 |
| TROFIGUIER | 1802 | 1866 | Saint-Molf | 44 | 240 |
| TROLET | 1780 | ---- | Arques | 76 | 123 |
| TROUBLÉ | 1969 | 1969 | Chatenay-Malabry | 92 | 346 |
| TROUBLÉ | 1892 | 1926 | Gagny | 93 | 346 |
| TROUBLÉ | 1948 | 1948 | Paris 15ème | 75 | 346 |
| TROUBLÉ | 1951 | 1951 | Paris 20ème | 75 | 346 |
| TROUILLET | 1732 | 1807 | Epinay | 93 | 5 |
| TUAL | 1644 | ---- | Besné | 44 | 270 |
| TUAL | 1746 | 1777 | Saint Dolay | 56 | 200 |
| TUAL | 1644 | ---- | Saint Dolay | 56 | 270 |
| TUAL | ---- | 1995 | St Nazaire | 44 | 270 |
| TUAUT | 1620 | ---- | St Nazaire | 44 | 270 |
| TURBE | 1918 | 1941 | Ile d'Yeu | 85 | 277 |