István Esterházy (1616–1641)
Count István Esterházy de Galántha was a member of the wealthy Hungarian Esterházy family, eldest son of Palatine Nicholas Esterházy and his first wife, Baroness Orsolya Dersffy.
His father received the title of Count in 1626 by Emperor-King Ferdinand II, therefore his descendants also could make use of title. Count István died in 1641, when his father was still alive. His younger brother Ladislaus became head of the family in 1645.Family
Count István married to Countess Erzsébet Thurzó, granddaughter of Palatine György Thurzó, on 26 September 1638 in Kismarton ''. Erzsébet Thurzó's mother was Baroness Krisztina Nyáry de Bedegh, the second wife of Count István's father. They had a daughter:
