Peter de Grandson Bef 1195 - Abt 1257/1263 (1190–1258) Parents Béatrice de Genève Ebal IV de Grandson Children Otto de Grandson Jordane de Grandson Jacques de Grandson, Sire de Grandson Gerard of Grandson Henri III of Grandson William de Grandison, 1st Baron Grandison Willelmeta von Grandson Siblings Aymon de Grandson Hugues de Grandson Henri de Grandson Girard de La Sarraz, Lord of La Sarraz Partners Agnès von Neuenburg