Roger de Mowbray
Roger was born in 1250 in Kirklington, Yorkshire, England.  He died in Ghent.

 Rohese De Clare
Rohese was born on October 17th, 1252 in Turnbridge Kent England.  She died at the age of 64 in 1316.

 John De Mowbray
John was born on September 4th, 1286 in North Ride Yorkshire England.  He died at the age of 35 on March 23rd, 1322 in Yorkshire England.

 Alexander De Mowbray
Alexander was born in 1290 in Kirklington, Yorks, England.