Battle of the Crossings of Erui

In T.A. 1447 the rightful King Eldacar returned to Gondor at the head of an army composed of Northmen and many of the folk from the northern fiefs of the realm. Castamir the Usurper gathered the peoples of the coasts, especially from Pelargir and Umbar, and met Eldacar's forces at the Crossings of Erui, on the road between Pelargir and Minas Tirith.

The resulting clash was a victory for Eldacar, who slew Castamir in personal combat and regained the throne. However, the sons of Castamir, his kin, and many people of the fleets escaped to Pelargir. After enduring the Siege of Pelargir, in 1448 these enemies of the king sailed to Umbar, for Eldacar had no ships to stop them. Umbar became a refuge for the rebels for generations, until finally subdued by King Elessar in the Fourth Age.