Family: Earl Henry Sinclair / Jean Halyburton (F1979)
William Sinclair (1317-1358) 
|
Isabel of Orkney (1320- )
|
| Earl Henry Sinclair (1340-1404)
|
| Jean Halyburton (1355- ) |
Earl of Orkney Henry Sinclair, II (1375-1422)  |
| William Sinclair (1317-1358)
|
| Isabel of Orkney (1320- )
|
| Earl Henry Sinclair (1340-1404)
|
| Jean Halyburton (1355- ) |
| Earl of Orkney Henry Sinclair, II (1375-1422) |
