Nassau-Hadamar

Nassau-Hadamar was a county of the Ottonian Nassau line, centred on Hadamar. Count Emicho I moved his court to a moated castle there; his son John ruled in 1337.

John bought the lordship of Ellar but later pledged much of his land for debt. After his sons died without heirs, a succession feud divided Hadamar between Nassau-Dillenburg and Katzenelnbogen in 1405. Nassau-Dillenburg received the whole inheritance in 1557. A younger line established in 1607 died out in 1711, and Hadamar joined the Duchy of Nassau in 1806.