Family: Samuel Black BUCHANAN / Mary Martha Ryan (Keys) (F3784)
 | John BUCHANAN (1676-1728) 
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 | Catherine Black (1680-1774)
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| James Ryan (1680-1710) |
| Mary (1685- )
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| Samuel Black BUCHANAN (1705-1791)
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| Mary Martha Ryan (Keys) (1710-1766)
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| Margaret Mary McRae BUCHANAN (1728-1788)  |
| John BUCHANAN (1730- ) |
| George BUCHANAN (1734- ) |
| David BUCHANAN (1736- ) |
| William BUCHANAN (1738- ) |
| Samuel BUCHANAN (1740- ) |
| Mary BUCHANAN (1742- ) |