_Otto I NASSAU ______+ | (.... - 1289) _Henry NASSAU-SIEGEN ___________________| | (1270 - 1343) | | |_Agnes OF LEININGEN _ | (.... - 1299) _Otto II NASSAU ______| | (1305 - 1350) | | | _____________________ | | | | |_Adelaide of Heinsberg and BLANKENBURG _| | | | |_____________________ | | |--John I NASSAU | (1340 - 1416) | _____________________ | | | ________________________________________| | | | | | |_____________________ | | |_Adelheid of Vianden _| | | _____________________ | | |________________________________________| | |_____________________