| Spouse | Isabella Graham (1444 - 1510) |
| Child | Lady Margaretha Buchanan (1460 - 1537) |
| Child | Mary Ann Buchanan (1460 - 1505) |
| Child | Patrick Buchanan Younger of Buchanan (1460 - 1513) |
| Child | Lady Margaretha Buchanan (1460 - 1537) |
| Child | Egidia Giles Buchanan (1464 - 1520) |
| Child | Janet Buchanan (1469 - 1518) |
| Child | Patrick The Younger 16th Laird of Buchanan Buchanan (1470 - 1513) |
| Child | Maurice Buchannan (1471 - ) |
| Child | Elizabeth Buchanan (1472 - 1540) |
| Child | Walter Buchanan of Easter CAtter, 1st of Spittal (1482 - ) |
| Child | John Buchanan of Aughmar, Arnpryor and Gartartan (1495 - 1547) |
| Child | Buchanan ( - ) |