John de Mowbray
John was born on September 4th, 1286 in Chamb, Norfolk, England.

 Alivia Braose
Alivia was born about 1305 in Gower, Glamorganshire, Wales.  She died before July 30th, 1331.

 John de Mowbray
John was born on November 29th, 1310 in Hovingham, Yorkshire, England and his baptism took place in All Saints, Hovingham, Yorkshire, England.  He died at the age of 50 on October 4th, 1361 in Bedford, Bedford, England.