He married Laetitia Bechtolf (b. Wedel, 5 May 1978) in a civil ceremony in Hamburg on 5 May 2006 and a religious ceremony in Panker on 10 June 2006. This was the first accepted morganatic union that has been accepted in the Hessian Royal House; both his uncle Prince Otto Adolf's wives were not given the title of Princess. The couple has a daughter and a son.
Princess Elena Margherita Lotti Christiane Elizabeth of Hesse (born 5 December 2006)
Prince Tito Friedrich Hans Andreas Alnwick of Hesse (born 24 August 2008)