Anna Maria of Ostfriesland

Anna Maria of East Frisia
Born	(1601-06-23)23 June 1601
Died	15 February 1634(1634-02-15) (aged 32)
Noble family	Cirksena
Spouse(s)	Adolf Frederick I, Duke of Mecklenburg-Schwerin ​ ​ (m. 1622)​
Issue	Christian Louis I Anna Maria
Father	Enno III, Count of East Frisia
Mother	Anna of Holstein-Gottorp

Anna Maria of Ostfriesland (23 June 1601 – 15 February 1634) was a German noblewoman.^{[1] [2]}

She was a daughter of Count Enno III of East Frisia and Anna of Holstein-Gottorp. Her paternal grandmother was Katharina of Sweden, a daughter of Gustav I of Sweden and his second wife Margareta Leijonhufvud.

On 4 September 1622 she married her first cousin Adolf Frederick I, Duke of Mecklenburg-Schwerin (1588–1658). They had the following children:

1. Christian Louis I, Duke of Mecklenburg-Schwerin (11 December 1623 – 21 June 1692)
2. Sophia Agnes of Mecklenburg-Schwerin (11 January 1625 – 26 December 1694)
3. Karl, Duke of Mecklenburg-Mirow (8 March 1626 – 20 August 1670)
4. Anna Maria of Mecklenburg-Schwerin (1 July 1627 – 11 December 1669), married Augustus, Duke of Saxe-Weissenfels (ancestors of George III of the United Kingdom).
5. Johann Georg of Mecklenburg-Schwerin (5 May 1629 – 9 July 1675)
6. Hedwig of Mecklenburg-Schwerin (11 August 1630 – 17 May 1631)
7. Gustav Rudolf of Mecklenburg-Schwerin (26 February 1632 – 14 May 1670)
8. Juliane of Mecklenburg-Schwerin (8 November 1633 – 3 February 1634)