Sir John Stewart of Bronkyll
John was born about 1245 in Dundonald Castle, Irvine, Ayrshire, Scotland.  He died  due to died in batlle of Falkirk on July 22nd, 1298 in Falkirk, Stirlingshire, Scotland.

 Heiress Margaret de Bonkyl
Margaret was born about 1254 in Boncle, Berwickshire, Scotland.

 Lord Alexander Stewart of Bronkyll
Alexander was born in 1275 in Boncle, Berwickshire, Scotland.  He died at the age of 41 in 1316.