Question: When did Anna Maria Of Anhalt's father die?
Sentence (from "Joachim Ernest, Prince of Anhalt"): Joachim Ernest of Anhalt (21 October 1536 – 6 December 1586), was a German prince of the House of Ascania, ruler of the principality of Anhalt-Zerbst from 1551, and from 1570 sole ruler of all the Anhalt lands.
Relevant evidence: Yes