Happy Birthday to Princess Madeleine of Sweden, Duchess of Hälsingland and Gästrikland! The youngest child of King Carl XVI Gustaf and Queen Silvia of Sweden, she is the sister of Crown Princess Victoria and Prince Carl Philip. Educated in Stockholm and London, Princess Madeleine graduated with a Bachelor of Arts in art history, ethnology and modern history and studied child psychology at University of Stockholm. In 2013, she married British-born American financier Christopher O’Neill, who refused the offer of a title. The couple have three children, Princess Leonore, Prince Nicolas, and Princess Adrienne, and live in Florida. Princess Madeleine does not undertake many official engagements, but works for the World Childhood Foundation, which was founded by her mother. However, the couple are present at some official events, such at the annual Nobel Prize Ceremony and some State Visits.