Francis Erdmann of Saxe-Lauenburg ( Theusing, 25 February 1629 – 30 July 1666,

Schwarzenbek Schwarzenbek is a town in the district of Lauenburg, in Schleswig-Holstein, Germany. It is situated approximately 10 km northeast of Geesthacht, and 35 km east of Hamburg. Schwarzenbeks' coat of arms shows a black wolf on a yellow fiel ...

), was duke of

Saxe-Lauenburg The Duchy of Saxe-Lauenburg (german: Herzogtum Sachsen-Lauenburg, called ''Niedersachsen'' (Lower Saxony) between the 14th and 17th centuries), was a ''reichsfrei'' duchy that existed from 1296–1803 and again from 1814–1876 in the extreme sou ...

between 1665 and 1666. He was the eldest son of Duke Julius Henry and his second wife Elisabeth Sophia of Brandenburg, daughter of

John George, Elector of Brandenburg John George of Brandenburg (german: Johann Georg von Brandenburg; 11 September 1525 – 8 January 1598) was a prince-elector of the Margraviate of Brandenburg (1571–1598). Early life Born as a member of the House of Hohenzollern, he was th ...

Marriage

In 1654 Francis Erdmann married his half-cousin Sibylle Hedwig of Saxe-Lauenburg (30 July 1625 – 1 August 1703,

Ratzeburg Ratzeburg (; Low German: ''Ratzborg'') is a town in Schleswig-Holstein, Germany. It is surrounded by four lakes—the resulting isthmuses between the lakes form the access lanes to the town. Ratzeburg is the capital of the district Herzogtum La ...

), daughter of Duke

Augustus Caesar Augustus (born Gaius Octavius; 23 September 63 BC – 19 August AD 14), also known as Octavian, was the first Roman emperor; he reigned from 27 BC until his death in AD 14. He is known for being the founder of the Roman Pr ...

. Since their marriage remained without heir Francis Erdmann was succeeded by his half-brother Julius Francis.

Ancestry

Succession box

, - 1629 births 1666 deaths Francis Erdmann Francis Erdmann German Bohemian people People from Toužim {{Germany-royal-stub