Family/Spouse: Sir Marmaduke DE THWENGE. [Group Sheet] [Family Chart]
Piers married Hawise/Helwise DE LANCASTER. [Group Sheet] [Family Chart]
Piers/Peter married Agnes. [Group Sheet] [Family Chart]
Gilbert married Hawise DE LANCASTER before 20 Jul 1189. Hawise (daughter of William II DE LANCASTER and Helewise DE STUTEVILLE) died after Sep 1226. [Group Sheet] [Family Chart]