Family: Sir Seyer de Seton / Margaret Comyn (F1292)
 | Alexander de Seton (1180-1247) 
|
 | Margaret de Berkeley (1188- )
|
| Adam de Seton (1220-1249) |
| Bertram de Seton (1225- ) |
| Sir Christopher de Seton (1235-1269) |
| William Comyn (1210- ) |
| Sir Seyer de Seton (1230-1265)
|
| Margaret Comyn (1230- )
|
| Alexander de Seton (1250- )  |