Maurits meninggal dunia tidak berkahwin pada 1625 dan tidak meninggalkan anak yang sah. Dia diganti oleh saudara seibu/sebapanya Frederick Henry (Dutch: Frederik Hendrik), anak lelaki bongsu William I. Maurits urged his successor on his deathbed to marry as soon as possible. A few weeks after Maurits's death, he married Amalia van Solms-Braunfels.Frederick Henry and Amalia were the parents of a son and several daughters. These daughters were married to important noble houses such as the house of Hohenzollern, but also to the Frisian Nassaus, who were stadtholders in Friesland. His only son, William, married Mary, Princess Royal and Princess of Orange, the eldest daughter of Charles I dari England. These dynastic moves were the work of Amalia.