Henry II of Nassau
Henry II the Rich (c. 1180–1250), Count of Nassau, was the eldest son of Walram I and ruled from 1198. He enlarged his domains around Wiesbaden through the imperial stewardship granted around 1214 and built several castles, including Dillenburg.
He married Matilda of Guelders in 1215 and joined Frederick II on the Sixth Crusade in 1228. His sons Walram II and Otto I divided Nassau in 1255, founding the dynasty's two lines.