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

 Elizabeth de Eincourt
Elizabeth was born about 1240 in Strickland, Westmorland, England.

 William II de Strickland
William II was born before 1265.

 Joan de Strickland
Joan was born before 1272.

 Walter de Vaux de Strickland
Walter de Vaux was born before 1272 in Sizergh Castle, Westmorland, England.  He died about 1342.

 Alicede Strickland
Alicede was born before 1272.