 The shadow of Channon's death haunted him, and he was said to have "wept like a child" at her funeral.His father, Prince Ferdinand, recalled him to Germany for treatment at a private clinic, it was said he left Oxford so quickly that a family servant had to settle his bills with public houses, tailors and restaurants.After completion of his studies at a German university, where he wrote a doctoral thesis on the East German telephone system, Bismarck visited the family estate at Schönhausen, which was lost under communist rule in East Germany.