William Sinclair
William was born about 1145 in Rosslyn Castle, Roslin, Midlothian, Scotland.  He died in 1214 in Rosslyn Castle, Roslin, Midlothian, Scotland.

 Agnes Dunbar
Agnes was born in 1177 in Dunbar Castle, East Lothian, Scotland.

 Henry Sinclair
Henry was born about 1192 in Rosslyn Castle, Roslin, Midlothian, Scotland.  He died before 1214 in Rosslyn Castle, Roslin, Midlothian, Scotland.