A native Texan, he was born in the Pleasant Hill Community 10 miles southwest of Rockdale Texas. He lived near Lexington, Lee County, from 1934 until 1942, and in 1961 and 1962. He has owned his home in Round Rock, Williamson County, since 1991.
He is married to the former Lillian Martinez, originally from Havana, Cuba. He has five children; sons Clark III and Tom, daughters Leanna (Stewart) and Kristen, and step-daughter Opal (Hornig). He has one grandchild, John Clay Simmons.
He is a semi-retired computer field engineer. He worked in several Texas cities in that capacity. He was an avionics technician from 1952 until 1959. He worked as a nuclear warhead technician (Nike-Hercules) in Texas and Louisiana in 1959-1964. He also worked in the Austin area in 1964-1966, 1991-1992, 1995-Present as a computer field engineer.
He has maintained his own internet web server, The XLData Net, since 1996. The XLData Net has now become a full service Internet Service Provider.
He was a candidate for the United States House of Representatives in 1994 from Louisiana District 1 against the incumbent Robert Livingston. He also ran for the Texas House of Representatives in 2000. He held political appointments from 1958-1964.
There is a more extensive autobiography on line.