玛德琳公主，Princess Madeleine of Sweden, Duchess of Hälsingland and Gästrikland (Madeleine Thérèse Amelie Josephine;[1] born 10 June 1982), is the second daughter and youngest child of King Carl XVI Gustaf and Queen Silvia. Upon her birth, she was third in line of succession to the Swedish throne. She is currently seventh in the line of succession. Princess Madeleine is married to British-American financier Christopher O'Neill. They have three children, Princess Leonore, Prince Nicolas and Princess Adrienne.