Question: When was Mary, Princess Royal And Princess Of Orange's husband born?
Sentence (from "Mary, Princess Royal and Princess of Orange"): (Mary Henrietta; 4 November 1631 – 24 December 1660) was Countess of Nassau by marriage to Prince William II, and co-regent for her son during his minority as Sovereign Prince of Orange from 1651 to 1660.
Relevant evidence: Yes