In 1700, he received the wealthy
Starosty (essentially a senior royal administrative official) of
Spiš from his father. Immediately afterwards, he fled abroad with his father's mistress, not returning until after his father's death in 1702. He became the heir to
Czerniaków and
Ujazdów near Warsaw (which his father bought in 1674), and after the suicide of his brother
Franciszek in 1721, he received the extensive
Lańcut estate (which his great-grandfather
Stanisław Lubomirski bought in 1629). Through acquisition, he gradually acquired a large complex of estates in the
Rzeszów region; he was the owner of
Połonne (a former
royal town which had been granted to his great-grandfather
Stanisław). He took part in the
Great Northern War against
King Augustus II. In 1711, he obtained Augustus II's pardon and the return of the Spiš district office. For almost twenty years, he took no part in public life. On 4 December 1736, he was promoted to the rank of
Field Marshal. In the same year, he became head of the
Cuirassier Regiment, later the Czech Dragoon Regiment No. 2. He spent much time in Vienna and Austria, where he acquired landed estates in 1740. At the
Pacification Sejm in 1736, he torpedoed a project for new taxes and effectively thwarted an attempt at state reform. On 10 July 1737, he signed a
concordat with the
Holy See in
Wschowa. He was also a member of the Sejm in 1740, sharply criticizing the idea of expanding the army. ==Personal life==