Robert II de Vaux de Strickland
Robert II de Vaux was born before 1205 in Great Strickland.  He died in 1278.

 Daughter de Gellellestone
Daughter was born before 1204.  She died after 1219.

 William de Strickland of Sizergh Castle
William de Strickland of Sizergh was born about 1219.  He died in 1306 in Sizergh Castle, Westmorland, England.