Guillaume des Roches References Guillaume des Roches French seneschal Ask Anything Homework Help Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: Philip II/ Territorial expansionGuillaume des Roches, the powerful seneschal of Anjou, who had taken John’s side, came to terms with Philip in March 1203. Read MoreGuillaume des Roches, the powerful seneschal of Anjou, who had taken John’s side, came to terms with Philip in March 1203. Read More