- Claimant to a throne - Impostor - Title claimant - One who lays claim, or asserts a title (to something); a
claimant. - 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. - One who pretends, simulates, or feigns.