Anna of Holstein-Gottorp [SEP] mother
Anna of Holstein-Gottorp
Anna of Holstein-Gottorp (27 February 1575 – 24 April 1610) was a German noblewoman, daughter of Duke Adolf of Holstein-Gottorp and Landgravine Christine of Hesse (daughter of Landgrave Philip I of Hesse).
On 28 January 1598, she married Count Enno III of East Frisia. They had the following children:
1. Anna Maria, Countess of Ostfriesland (1601–1633), married Adolf Frederick I, Duke of Mecklenburg-Schwerin (1588–1658)
2. Rudolf Christian
, attempted to secure his wife's succession to the Russian throne upon the death in 1727 of her mother, the Empress Catherine I of Russia. His attempt failed, but his son by Duchess Anna Petrovna, Charles Peter Ulrich (who - as Duke of Holstein-Gottorp - succeeded in the ducal share of Holstein in 1739), eventually became Russian tsar in 1762, as Peter III.
Charles Frederick and Anna left for Gottorp ducal share of Holstein in 1727, taking residence in Kiel Castle, where Anna died following