Richard Cypher

Richard Cypher is the primary protagonist in the Sword of Truth fantasy series by Terry Goodkind. He is the son of George Cypher and the brother of Michael Cypher, First Councillor of Westland. He is a woods guide, and he is also the Seeker of Truth.

Warning: Wikipedia contains spoilers.

Richard Cypher was raised to believe he was the son of George Cypher. At the end of the first book, Wizard's First Rule, it is revealed that he is actually the son of the evil wizard Darken Rahl, who raped the good wizard Zedd's daughter. Thus, in later books, he assumes the name Richard Rahl.