Thomas de Lucy , of Copeland, Sir Knight
Thomas de was born about 1225 in Copeland, Cumberland, England.  He died before April 9th, 1305.

 Isabel de Bolteby
Isabel de was born about 1225 in South Tynedale, Northumberland, England.

 Maud de Lucy
Maud de was born in 1239 in Copeland, Cumberland, England.  She died after 1288.