Baroness Sohvia Elisabet of Ykskylä 13 Dec 1712 - 19 Mar 1737 (1712–1737) Parents Otto Reinhold Yxkull noble Anna Magdalena of Apolloff Children Gustaf Reinhold Rehbinder Baron Päärni Otte Rehbinder, lord of Cäimela and Vastse-Noo Siblings Charlotta Yxkull Frederika Yxkull Johanna Catharina Yxkull Carl Otto Yxkull Partners Gustaf Reinhold Rehbinder