Robert de Mohaut
Robert was born about 1235 in Mold, Cheshire, and Castle Rising, Norfolk, England.  He died before September 16th, 1275.

 Joan de Mowbray
Joan was born about 1240 in Axholme, Lincolnshire, England.  She died about 1315.

 Isabel de Mohaut
Isabel was born about 1262.  She died in 1329.