Henry of Lancaster (1280-1345), son of Edmund Lancaster and Blanche d'Artois, married Matilda/Maud Chaworth. They are known to have had seven children. The Wikitree profile shows an additional four children:
* ____ Morieux
I can find no source for these children as being the children of Matilda/'Maud, and I can't find evidence of illegitimate children. I propose to disconnect them from Henry and Matilda/Maud.