 Mama or Mamy, prince of the Mordvins ("mourza" of Tatars of Mordovia), Lord of Kadom and Piandem, is the ancestor if this family.Letters Patent of Tsar Ivan IV, dated 28 March 1580, designate "Ian Galytch" as Prince of the Mordvins of Kadom and Stialdem.In the 20th and 19th centuries, there were two clearly distinct branches of this house