- 1 John Courtman (1500-1564) (Great Baddow, Essex) m Johanne Sturgeon (1509- )
- 2 Ralph Courtman (1531-1612) m Johanne (1534- )
- 3 Jonas Courtman (1580-1659) m (1615) Rebecca
- 4 Jonas Courtman (1617-1660) m (1636) Joanne
- 5 Daniel Courtman (1637-1728) m (1662, Essex) Latticia Brown ( -1681)
- 6 Jonas Courtman (1669- ) m (1700) Sarah (1681- )
- 7 Isaac Courtman (1712-1746) (Hatfield Peverel)
- 8 Isaac Courtman (1735-1813) m (1770) Mary Turnedge
- 9 Aaron Courtman (1796-1847) sailor m (1817, Burnham) Sarah Smith (1798-1893)
- 10 John William Courtman (1833- ) (Burnham) [1] m (1855, St Mt, Jer) Priscilla Ann Kent (1837-1883)
- 11 John William Courtman (1856-1905) (Jer) [2] m (1880, St Mt) Elizabeth Richmond, d of James
- 11 George Frederick Courtman (1858-1936) (Jer) [3] m 1 (1880, St Mt) Virginie Aimable La Mare (1862- ), d of Auguste
- 12 George Francis Augustus Courtman (1884-1956) (Jer) m (1909, Gosport, Hants) Kate Louise Sweetenham (1886-1961)
- 13 Hilda Dorothy Courtman (1910-1992)
- 13 Vera Winifred Courtman (1912-1997)
- 12 Walter Herbert Courtman (1889- ) (Jer)
- 12 Emmas Louise Courtman (1890- ) (Jer)
- 12 Charles Frederick Courtman (1893-1915) (Jer)
- 12 Maude Alice Courtman (1894- ) (Jer)
- 12 Beatrice May Courtman (1896- ) (Jer)
- 12 John William Courtman (1903-1984) (Jer) m (1928, Hants) Norah Kathleen Duggan (1906-1980)
- 2nd wife of George Frederick Courtman (1902, St Mt) Maria Louisa Besnard
- 12 John William Courtman (1903-1984)
- 12 George Francis Augustus Courtman (1884-1956) (Jer) m (1909, Gosport, Hants) Kate Louise Sweetenham (1886-1961)
- 11 Gilles Henry Courtman (1862-1917) (Jer) m (1897, Lon) Elizabeth Arkley (1869- )
- 12 Gilles Henry Courtman (1898-1946) (Jer)
- 12 William Frederick Courtman (1899-1955) (Jer)
- 12 Elizabeth Alice Courtman (1901- ) (Jer)
- 12 John William Courtman (1903-1903) (Jer)
- 12 Sidney Herbert Courtman (1905-1957) (Jer)
- 12 Edith Emily Courtman (1910-1979) (Jer)
- 11 Charles James Courtman (1864- ) (Jer)
- 11 Harry Aaron Courtman (1867-1931) (Jer) m (1910, Lon) Alice Maud Gates (1872-1951)
- 12 Maud Marion Courtman (1911-1983) m Thomas Donald Bridge (1916-1984)
- 11 Walter Edison Courtman (1870- ) (Jer)
- 11 Priscilla Grace Courtman (1872- ) m (1900, St H) Albert Edward Breuilly, son of Louis
- 11 Sydney Courtman (1876-1935) (Jer) m (1896) Matilda Ann Monamy (1873-1943)
- 12 Sydney Arthur Thomas Courtman (1896-1972) (Jer)
- 12 Matilda Courtman (1899-1907) (Jer)
- 12 Florence Courtman (1909- ) (Jer)
- 10 John William Courtman (1833- ) (Burnham) [1] m (1855, St Mt, Jer) Priscilla Ann Kent (1837-1883)
- 9 Aaron Courtman (1796-1847) sailor m (1817, Burnham) Sarah Smith (1798-1893)
- 8 Isaac Courtman (1735-1813) m (1770) Mary Turnedge
- 7 Isaac Courtman (1712-1746) (Hatfield Peverel)
- 6 Jonas Courtman (1669- ) m (1700) Sarah (1681- )
- 5 Daniel Courtman (1637-1728) m (1662, Essex) Latticia Brown ( -1681)
- 4 Jonas Courtman (1617-1660) m (1636) Joanne
- 3 Jonas Courtman (1580-1659) m (1615) Rebecca
- 2 Ralph Courtman (1531-1612) m Johanne (1534- )