H. Rider Haggard 
Ancient Allan [PDF ebook] 

Allan Quatermain, the swashbuckling adventurer who is H. Rider Haggard’s best-remembered character, often faced down formidable adversaries in exotic lands around the globe. But in The Ancient Allan, the perilous journey that Quatermain undertakes is one that leads him into the murky depths of his own distant past, where he learns more about his adventures in a previous existence that took place long ago.