Children

 Isabel Mareschal
Isabel was born on October 9th, 1200 in Pembroke Castle and her baptism took place in April 1206 in St. David's, Pembrokeshire, Wales.  She died at the age of 39 on January 17th, 1240 in Berkhampsted, Berkhampsted, Hertfordshire, England.  She was buried in Beaulieu, Southampton, England.