Question: When was Anna Sophia Of Prussia's husband born?
Sentence (from "John Albert I, Duke of Mecklenburg"): John Albert I, Duke of Mecklenburg, in older literature known as "John" or" Johann" (23 December 1525 – 12 February 1576), was the reigning Duke of Mecklenburg-Güstrow from 1547 to 1556 and of Mecklenburg-Schwerin from 1556 to 1576.
Relevant evidence: Yes