John II de Mowbray
John II was born about 1310 in Kirklington, Yorkshire, England.  He died on October 4th, 1361 in Kirlington, Yorkshire, England.

 Margaret Percy
Margaret was born about 1310.

 William Mowbray
William was born about 1327 in Colton, Yorkshire, England.

 Alexander Mowbray
Alexander was born about 1340 in Kirklington, Yorkshire, England.  He died about 1368.