Albert Achilles (
əkĭl'ēz), 1414-86, elector of Brandenburg (1470-86); third son of Elector
Frederick I. He succeeded his brother in 1470. Anxious to consolidate Hohenzollern power in Brandenburg, he issued (1473) the
Dispositio of Achillea, which decreed that the title of elector should pass to the eldest son. This established the law of primogeniture in Brandenburg. The
Dispositio remained in force until 1918.