Career
His one term in office coincided with the first term of Governor John McKeithen. He was defeated for reelection by his fellow Democrat East. L. "Bubba" Henry, who in his second term in the chamber became the House Speaker. A native of Jonesboro, the parish seat of Jackson Parish, Culpepper was the son of the former Julia Catherine Reed (1878-1950) and William Franklin Culpepper (1871-1962).
He held a Bachelor of Science in Engineering, degree-granting institution unavailable.
During World World War II, Culpepper worked in radar stationed in Belmar in Monmouth County in eastern New Jersey. Culpepper died in Hodge north of Jonesboro in 1970 at the age of sixty-one.
Marvin and Ezelle Culpepper are interred at Springhill Cemetery in Jonesboro.