The subject of this volume should, indeed, possess sufficient attraction in itself, without needing the adventitious aid of any recent _causes célèbres_ to give it additional interest. The mystery which envelopes the histories of such men as the supposititious Voldemar of Brandenburg, Perkin Warbeck, the _soi-disant_ Sebastian of Portugal, and other renowned claimants to royalty, invests their romantic adventures with a glamour surpassing that of acknowledged fiction. Whether impostors, or the persons they alleged themselves to be, the record of their lives and fate forms one of the most fascinating chapters of historic biography. In many instances the materials procurable are too scanty to admit of lengthy memoirs, whilst even in cases where that is not so, only the most remarkable features of a claimant's story have been selected, in order to render this work as inclusive as possible. In instances of suspicious evidence (and, it must be premised, many of the incidents herein recorded are based upon dubious testimony), only a bare recapitulation of an authority's account is given, all expression of personal opinion being suppressed, and the reader left to form his own theory as to the truth or falsity of the aspirant's claim. The numerous cases of claimants to royalty herein recorded constitute, it is true, but a portion of those to be met with in history, yet it is believed they include the most interesting. In several instances the evidence preserved of these adventurers' careers is too scanty for separate mention, nevertheless passing allusion may be made to the pseudo Perseus of Macedon, to the false Ariarathes of Cappadocia, and to the remarkable case of Agrippa's slave, who concealed his master's death and assumed his master's position, until the inevitable detection and execution overtook him. In the first and second centuries of the Christian era many of these pretenders sprang up in different portions of the Latin empire, and gave the Romans a great amount of trouble. One of the most noteworthy, considering the long continuance of his success, was a man claiming to be Achelaus, son of Mithridates, King of Pontus. According to the account given by Latin writers, so skilfully did he play his part that the King of Egypt, one of the Ptolemys, actually gave him his daughter in marriage, and appointed him heir and successor to the kingdom of Egypt. This claimant, however, like so many of his class, met with an untimely end, being finally defeated and slain on the battlefield by the Romans, under the Consul Gabrinus.