 With Otto's death, the main line of Schauenburg was extinct, and Holstein-Pinneberg was acquired by Christian IV for the royal share of the Holstein duchy.Schauenburg went to the House of Lippe.In 1460, Schleswig fell to the Danish royal House of Oldenburg, in the person of Christian I, who inherited not only the Duchy, a Danish fief, but also the County of Holstein-Rendsburg, a Saxe-Lauenburgian subfief within the Holy Roman Empire, following the death of his maternal uncle Adolf I (and VIII as Count of Holstein-Rendsburg).