Question: When is Princess Henriette Of Belgium's mother's birthday?
Sentence (from "Princess Henriette of Belgium"): Princess Henriette of Belgium, later Princess Henriette of Orléans, Duchess of Vendôme (30 November 1870 – 28 March 1948), was the daughter of Prince Philippe, Count of Flanders, and Princess Marie of Hohenzollern-Sigmaringen.
Relevant evidence: Yes