He had one brother - Vester. After the Presley's moved into
Graceland in 1957, Vester worked as head gate guard - a job he held for many, many years. Vester was married to Elvis' mother Gladys' sister, Clettes. With Presley cook Nancy Rooks, he co-authored "The Presley Family Cookbook." In 1979, he recorded, "A Message to Elvis Fans and Friends." I met him in the early 1990s and spent several visits with him after that. We both loved "Coca-cola Jello". What a sweetie!
All of these people are dead.
The only Vernon relative (other than his second wife Dee and her sons) to try to capitalize on Elvis' fame was Vernon's father Jessie D. In 1958, he made an album called "The Roots of Elvis."
Jessie was not popular with the Vernon Presley family. When Vernon got arrested in 1938 for forgery, Jessie refused to post bail, and, while Vernon was in prison, he sold his little house, (now the Birthplace Home in Tupelo).
In 1946, Jessie divorced Elvis' grandmother and Vernon's mother Minnie Mae. The next year he married a local school teacher and had little to do with the family until Elvis got famous some ten years later.
I have read that Elvis bought him a car at some point.
The real cash-in relatives were Elvis' stepmother Dee Stanley and her sons, David, Rick and Bill. A whole other story!