Leopold III, Duke of Anhalt Dessau
Leopold III Frederick Franz, Duke of AnhaltDessau , known as Prince Franz or Father Franz, was a German prince of the House of Ascania. From 1751 until 1807 he was Reigning prince of the Principality of AnhaltDessau and from 1807 the first Duke of the Duchy of AnhaltDessau.
Leopold was born at Dessau as the eldest son of the later Leopold II, Prince of AnhaltDessau, by his wife Gisela Agnes, daughter of Leopold, Prince of AnhaltKthen.
Source: Wikipedia