Gilbert III De Umfreville
Gilbert III was born in 1310 in Redesdale, Northumberland, England.

 Joan Willoughby
Joan was born in 1325.

 Thomas De Umfreville
Thomas was born in 1346 in Castle Prudhoe, Northumberland, England.  He died at the age of 41 on May 21st, 1387 in Castle Prudhoe, Northumberland, England.