Otto I Count of NASSAU
He married Agnes Countess of Leiningen . Agnes Countess of Leiningen was born at of Landeck bei Klingenmünster, Pfalz, Bavaria Abt 1244 .
They were the parents of 7
children:
Heinrich I Count of Nassau-Siegen
born Abt 1266.
Mathilde, Countess of Nassau
born Abt 1268.
Otto, Count of Nassau
born Abt 1270.
Emich I Count of Nassau-Hadamar
born Abt 1271.
Johann, Count of Nassau
born Abt 1273.
Gertrud, Countess of Nassau
born Abt 1274.
Agnes, Countess of Nassau
born Abt 1276.
Otto I Count of Nassau died Bef 19 Mar 1290 .
Agnes Countess of Leiningen died Aft Dec 1299 .