Earl of Caithness Sir William Sinclair
Earl of Caithness Sir William was born in 1436 in Orkney, Orkney Islands, Scotland.  He died at the age of 40 in 1476 in Rosslyn Castle, Roslin, Midlothian, Scotland.

 Marjory Sutherland
Marjory was born about 1436 in Dunrobin Castle, Golspie, Sutherlandshire, Scotland.  She died in 1480 in Rosslyn Castle, Roslin, Midlothian, Scotland.

 Marjory Sinclair
Marjory was born about 1455 in Rosslyn Castle, Roslin, Midlothian, Scotland.

 Eleanor Sinclair
Eleanor was born in 1457 in Rosslyn Castle, Roslin, Midlothian, Scotland.  She died at the age of 61 on March 21st, 1518.

 Sir Henry Sinclair
Sir Henry was born in 1459 in Rosslyn Castle, Roslin, Midlothian, Scotland.  He died at the age of 54 on September 9th, 1513 in Battle of Flodden Field, Northumberland, England.