Background
Wolfgang was the son of Philipp II, Count of Isenburg-Büdingen in Birstein and Countess Irmengard of Solms-Braunfels. Through his mother he was first cousin once removed of Amalia of Solms-Braunfels, Princess consort of Orange and first cousin of Johannetta of Sayn-Wittgenstein sister-in-law of William the Silent.