Marhwini

Marhwini was the first lord of the people who became known as the Éothéod, later the Rohirrim. He was the son of Marhari, who led a remnant of the Northmen to battle alongside Gondor to stop the advance of the Wainriders years earlier. Through Marhari his father, he was also a direct descendant of Vidugavia, 'King of Rhovanion'.

Marhwini's father Marhari first aligned his people with Gondor in a fight with the Wainriders called the Battle of the Plains. In that conflict, King Narmacil II of Gondor was slain, as was Marhari. Marhwini then led a remnant of what remained of the Northmen to the vales of Anduin, where they mixed with fugitives escaped from the east. This was the beginning of the culture that would become the Rohirrim.

During the reign of Calimehtar, King of Gondor, Marhwini sent word to Gondor that a host of Wainriders was preparing to assault the land of Calenardhon (later Rohan). Calimehtar led an army out of Gondor and joined with Northmen under Marhwini, and overwhelmed the Wainriders' army. As Marhwini had hoped, many thralls of the Wainriders who had once been among the Northmen revolted, and caused their captor's settlements to be destroyed. As the Wainriders retreated from battle, they were forced to return far to the east, having been defeated and driven from their homes. Thus were the Northmen for a time victorious.