. . . "1974Z"^^ . "1974Z"^^ . "Television,filmactor" . "1957-07-31Z"^^ . "Dennis Dirk Blocker"@en . "Dennis Dirk Blocker (born July 31, 1957) is an American actor and the son of actor Dan Blocker, of the popular TV series, Bonanza and Dolphia Lee Blocker (n\u00E9e Parker).Dirk Blocker began appearing in American television in 1974, acting in an episode of Marcus Welby, M.D. at the age of sixteen."@en . . "1957Z"^^ . "Blocker, Dirk"@en .