| Father | William Gillum (1720 - 1791) |
| Mother | Mary Jarrett (1724 - ) |
| Sibling | Peter Gilliam (1737 - 1795) |
| Sibling | Richard Gilliam (1738 - ) |
| Sibling | Martin Gilliam (1740 - 1826) |
| Sibling | John Gilliam (1740 - 1792) |
| Sibling | Devereux Gilliam (1743 - 1809) |
| Sibling | Jarrett Gilliam (1744 - 1833) |
| Sibling | Sarah Gilliam (1745 - 1816) |
| Sibling | Charles Gilliam (1749 - ) |
| Sibling | Anna Gilliam (1750 - 1798) |
| Sibling | Thomas Gilliam (1750 - 1809) |
| Sibling | John Gilliam (1751 - 1821) |
| Sibling | Archelaus Gilliam (1754 - 1836) |
| Sibling | Joyce Gilliam (1755 - 1798) |
| Sibling | Richard Gilliam (1756 - 1799) |
| Sibling | Charles Gilliam (1759 - ) |