Pam, a Google search shows three Thebo's at Woodlawn Cemetary in Las Vegas, as follows:

THEBO, Delta M. 1898 - 1967 Our Beloved Mother

THEBO, John Thomas 22 May 1932 - 20 Aug 1941

THEBO, Thomas J. 1896 - 1971 Our Beloved Father

This is an interesting link: http://www.rense.com/ufo4/stars.htm

It references "Tom and Delta Thebo" as being the Grandparents of Robert T. Bigelow, a current day UFO researcher. The article is from 1999 and shows Bigelow to be living in Las Vegas, as a real estate mogul.

Back to you.

Jim Follis