Rumor has it that the Cartwright family of T.V.’s "Bonanza" got their name because one of Wilburn Cartwright's daughters married the creator of the series. Suppose this person saw Wilburn, who represented Oklahoma's Third District, and his six brothers? The Cartwright boys - Wilburn, Keith, Clifford, Dewey, Floyd, McKinley, and Shafter - gather at Wapanucka in 1934.