_Henry NASSAU-SIEGEN ___________________+ | (1270 - 1343) _Otto II NASSAU ______| | (1305 - 1350) | | |_Adelaide of Heinsberg and BLANKENBURG _ | _John I NASSAU __________| | (1340 - 1416) m 1357 | | | ________________________________________ | | | | |_Adelheid of Vianden _| | | | |________________________________________ | | |--Englebert I NASSAU | (1370 - 1442) | ________________________________________ | | | ______________________| | | | | | |________________________________________ | | |_Margareta of the Marck _| (1409 - ....) m 1357 | | ________________________________________ | | |______________________| | |________________________________________