Pretender

Webster's Dictionary of the English Language

·noun One who pretends, simulates, or feigns.

II. Pretender ·noun One who lays claim, or asserts a title (to something); a claimant.

III. Pretender ·noun The pretender (·Eng. Hist.), the son or the grandson of James II., the heir of the royal family of Stuart, who laid claim to the throne of Great Britain, from which the house was excluded by law.