Their two children were inside the house when their father shot and killed their mother on the driveway outside. He later shot himself after being confronted by law enforcement officials.
On Tuesday the Nolan County Sheriff investigating the murder-suicide told KTXS that James Elmer Rainey had a small criminal history, mainly due to alcohol incidents.
On Monday Rainey drove to his parents' house and shot his estranged wife, Amy Diane Rainey, there with their kids inside.
He then drove to his home in Trent and shot himself.
Autopsies were to be performed Tuesday in Odessa.
On Thursday, Amy Diane Rainey will be laid to rest.
The visitation will be at 10 a.m. with the funeral to follow at 11 a.m.
Both services will be at the McCoy Funeral Home, located at East 3rd Street in Sweetwater.