Princess Beatrice’s husband made a touching gesture to Princess Eugenie’s son August. On Friday, Princess Eugenie’s eldest son turned three-years-old and received a special message from his doting uncle. Edoardo Mapelli Mozzier wished his nephew a Happy Birthday on social media to mark the special occasion. He posted “Happy Birthday Augie x,” with three heart-eyes emojis. Sarah Ferguson’s youngest daughter, Eugenie, has two young sons with her husband Jack Brooksbank. August’s uncle posted his birthday message in response to Eugenie’s Instagram birthday post for her son. Eugenie posted on Inst…