John of Nassau-Dillenburg

John (c. 1275–1328), third son of Count Otto I of Nassau, was destined for the Church and became a canon at Worms. After his mother's death in 1303 he left the clergy, receiving Nassau-Dillenburg in the brothers' partition.

He fought the long Dernbach feud against local lords and Hesse. In 1327 he captained the Mainz-Nassau army, winning at Seibertshausen, but fell against the Hessians near Wetzlar in 1328. Unmarried, his lands reverted to his brothers.