Gerlach I of Nassau

Gerlach I (c. 1285–1361), Count of Nassau and a younger son of King Adolf of Nassau, succeeded his elder brother Rupert in 1305 and ruled from Sonnenberg Castle near Wiesbaden. In 1309 he translated his father's body to Speyer Cathedral.

He escorted Henry VII to his imperial coronation in Rome in 1312 and only submitted to Louis the Bavarian after the battle of Mühldorf in 1322. Imperial Vogt of the Wetterau from 1326, he divided Nassau among his sons in 1344.