Question: What is the date of birth of Princess Alexandra Victoria Of Schleswig-Holstein-Sonderburg-Glücksburg's father?
Sentence (from "Friedrich Ferdinand, Duke of Schleswig-Holstein"): Friedrich Ferdinand of Schleswig-Holstein-Sonderburg-Glücksburg (12 October 1855 – 21 January 1934) was the fourth Duke of Schleswig-Holstein-Sonderburg-Glücksburg and became Duke of Schleswig-Holstein in 1931.
Relevant evidence: Yes