According to information on ancestry.com, Samuel Jefferson Cockrell was born June 1857 in Mississippi to Cynthia Henderson and Griffin Cockrell. He married Malinda Caroline Mitchell in Clay County, Mississippi in 1878.
The 1910 census shows the couple living in San Saba, Texas and by 1920, the census shows the doctor and his wife living in Comanche. I’m not sure exactly when the following business card was printed, but it advertises Cockrell as a masseur, and he appears to be wearing a WWI uniform. The plane on the back of the card seems to indicate that era as well.
S.J. Cockrell and Malinda are buried in the White Point Cemetery in Comanche County.