William de Mowbray
William was born about 1172 in Thirsk & Slingsby, Lincolnshire, England.  He died in 1223 in at his castle in the Isle of Axlholme.  He was buried in Abbey of Newburgh, Yorkshire, England.

 Alice D'Aubigny
Alice was born about 1151 in Castle Arundel, Sussex, England.

 Roger de Mowbray
Roger was born about 1218 in Thirsk & Slingsby, Lincolnshire, England.  He died in November 1266.