(14 July 1956 - 1972) (divorced) (1 child)
In October 1955 Southern met model and aspiring actress Carol Kauffman; they were married on July 14, 1956.
Southern returned to Europe with Carol in October 1956, stopping off in Paris before settling in Geneva, Switzerland, where they lived until 1959. Carol took a job with UNESCO, which supported them as Terry continued to write.
Terry and Carol's son and only child Nile Southern was born on December 29, 1960.
As revealed by documents released under the Freedom of Information Act, Southern and his wife Carol had been put under surveillance by the FBI starting in 1965.
Terry and Carol Southern divorced in early 1972 but remained on good terms and Southern continued to support and help raise their son Nile. The attentions of the IRS had also affected Carol, who had an inheritance from her late father seized as part of Terry's tax settlement. She later became an editor with Crown Publishing, and married critic Alexander Keneas.