Question: What is the date of death of Magdalena Sibylla Of Saxe-Weissenfels's mother?
Sentence (from "Anna Maria of Mecklenburg-Schwerin"): Anna Maria of Mecklenburg-Schwerin (1 July 1627, in Schwerin – 11 December 1669, in Halle) was a German noblewoman, a member of the House of Mecklenburg and by marriage Duchess of Saxe-Weissenfels.
Relevant evidence: Yes