Leopold IV Frederick, Duke of Anhalt (1 October 1794 – 22 May 1871) was a German prince of the House of Ascania.

[2] The younger Raster was given the unusual choice to either stay in Anhalt-Dessau and face criminal prosecution for his role in the Revolution or to emigrate from the country freely like other Forty-Eighters.

Raster made the second choice and eventually became a powerful Republican Party political boss in the United States.

[3] On 27 November 1847 he inherited the Duchy of Anhalt-Köthen from his distant cousin Duke Henry.

[4] In Berlin on 18 April 1818 Leopold married Princess Frederica of Prussia (b. Berlin, 30 September 1796 - d. Dessau, 1 January 1850), daughter of Prince Frederick Louis Charles of Prussia (brother of King Frederick William III of Prussia) by his wife Frederica of Mecklenburg-Strelitz; through her mother's last marriage, she was a half-sister of King George V of Hanover.