Walram II of Nassau

Walram II (c. 1220–24 January 1276), Count of Nassau, was the second son of Henry II the Rich. He succeeded before 1251 with his brother Otto I, and the Prima Divisio of 1255 gave him the lands south of the Lahn: Wiesbaden, Idstein and Weilburg.

He served King Rudolf I as Hofmarschall and councillor, but lost Niederlahnstein and Vallendar to the Archbishop of Trier. In a fit of madness he burned his copy of the division treaty and allegedly died mentally deranged; his son Adolf became King of Germany.