Cawley's Medieval Lands database says they had two children (Richard and Egidia)...

Full citation

Cawley's Medieval Lands database says they had two children (Richard and Egidia). Richardson's Royal Ancestry has Richard and Giles (married to the same man Cawley shows as Egidia's husband). Richardson does not include any information other than the names of the three additional sons he lists.

Details