Willelmeta von Grandson - Bef 13 Sep 1319 Parents Peter de Grandson Agnès von Neuenburg Children Pierre III de Gruyère Rodolphe de Gruyère, Seigneur de Montsalvens Siblings Henri III of Grandson William de Grandison, 1st Baron Grandison Gerard of Grandson Otto de Grandson Jacques de Grandson, Sire de Grandson Jordane de Grandson Partners Pierre de Gruyère