Ursula of Brandenburg

Ursula, Margravine von Brandenburg (17 October 1488 – 18 September 1510, Güstrow) was a German noblewoman.

She was the daughter of Johann Cicero, Elector of Brandenburg and Margarethe of Saxony.

At age 19, on 16 February 1507 she married Duke Heinrich V of Mecklenburg-Schwerin (1479-1552). They had three children:
# Sophie of Mecklenburg-Schwerin (1508-1541), married Ernest I, Duke of Brunswick-Lüneburg
# Magnus of Mecklenburg-Schwerin (1509-1550) (predeceased his father)
# Ursula of Mecklenburg-Schwerin (30 August 1510 – 22 April 1586), abbess of Ribnitz

She died in 1510 at age 21, less than a month after the birth of her third child.

Genetics

As a matrilineal relative of Elisabeth of Luxembourg and ultimately of Nicholas II of Russia, she and all her female-line descendants are members of mitochondrial haplogroup T.