Jean the Red de Brittany Duc de Brittany

Jean the Red de Brittany's father was Pierre I de Dreux Mauclerc Ct de Brittany and his mother was Alice de Thouars de Brittany Dss de Brittany.  His maternal grandmother was Constance de Brittany Dss de Brittany. He had a sister named Yolande. He had a half-sister named Yolande.  He died in 1286.