John Muir Tartan Heavyweight 16ozThe John Muir tartan was created in 1998 by David McGill for the 150th anniversary of John Muir's entry into America. The United States was launched at a celebration within Pleasanton, the San Francisco Bay area the City of Pleasanton in 2002. Muir's grandson accepted the inscribed tartan clock as well as frames on behalf of his family. Muir family. Muir is considered to be an influencer to both Scots as well as Americans'. Muir's biographer Steven J.