Four or more generations of descendants of Mary Adair (1754-1807) if they are properly linked:
1. Mary Adair (1754-1807)
- 2. Mary Nixon (1779-1854)
- 2. Margaret Nixon (1780-)
- 2. James McCalla (1783-1860)
- 2. Sarah McCalla (1784-1832)
- 2. Elizabeth McCalla (1786-1867)
- 2. Isabella McCalla (1789-1871)
- 2. William McCalla (1792-1827)
- 2. Katherine McCalla (1798-1879)