TX marriage record: John D. Thornhill and Anita Haile Jackson, married 19 Apr 1914, El Paso Co., TX
1930 Bexar Co., Alamo Heights, TX census: John D. Thornhill, age 42, b. TX, father LA, mother TX, construction engineer - general construction (I think) Anita, age 38, b. OR, father KY, mother OH Jack J., age 15, b. AZ, father TX, mother OR Helen V., age 13, b. TX, father TX, mother OR
TX Death Record: John Dix Thornhill age 72 race white born 1 Feb 1886, San Antonio, TX died 9 Aug 1958, San Antonio, TX buried 12 Aug 1958 San Fernando Cemetery #2, San Antonio residence Precinct #4, Bexar Co. occupation Air Force Engineer married father: _____ Thornhill mother: Unknown
It is interesting that there was a man named William John Thornhill, born the same day 1 Feb 1886 in San Antonio, father Unknown, mother Susanna
May or may not be any kin, maybe just a coincidence that he was born on the same day in San Antonio.