Question: What is the date of birth of Prince Floris Of Orange-Nassau, Van Vollenhoven's mother?
Sentence (from "Prince Floris of Orange-Nassau, van Vollenhoven"): Prince Floris Frederik Martijn of Orange-Nassau, van Vollenhoven (born 10 April 1975) is the fourth and youngest son of Princess Margriet of the Netherlands and Pieter van Vollenhoven.
Relevant evidence: Yes