 In 1404, Henry was kidnapped by Bernard VI, Count of Lippe; when he paid a ransom, he was released, and later, with the support of King Rupert, took revenge on Bernard.After the death of Gerhard, Count of Schleswig, Henry's sister's husband, Queen Margaret I of Denmark tried to take control of Schleswig, but Henry, together with Holstein, successfully defended Schleswig.Henry married Sophie (died 1406), daughter of Wartislaw VI, Duke of Pomerania, in 1388.