Erandio is a town and municipality located in the province of Biscay, in the autonomous community of Basque Country, northern Spain.The name comes from euskera ARANDIO that means plum plantation or field. In 1415, during the War of the Bands, the corregidor, the royally-appointed governor of the Biscayan hermandad, acting on royal orders, siphoned off Biscayan wheat to the Asturias, inciting a rebellion. The Biscayans were defeated at Erandio with the loss of sixty men and the wheat transfers continued.