When Hernando de Soto stepped ashore Saturday — twice — the man portraying him tried to add a convincing swagger to his step. … He may be a volunteer, but [Tim] Burke, 51, is a serious re-enactor who has appeared in several films and documentaries. … When Burke pretends that his re-enactment work is no big deal, his wife Jennifer laughs and corrects him. … Jennifer should know — they met more than 20 years ago at a Florida medieval fair sponsored by the Society for Creative Anachronism. She was a student at New College of Florida in Sarasota, while he was at the Florida Institute of Technology in Melbourne.