Theriot (pronounced TERRY OH) was born in Erath in Vermilion Parish, twenty-six miles south of the larger [[Lafayette]], to Joseph "Lastie" Theriot (1879-1966) Theriot and the former Emerite Barras (pronounced BAH RA) (1886-1981). He was educated in Erath public schools, the University of Louisiana at Lafayette (at the time Southwestern Louisiana Institute) and the [[Tulane University]] Law School in [[New Orleans]]. On June 7, 1939, he began his law practice and soon took a role in civic affairs and organized the Abbeville Dairy Festival, first held in September 1949. In 1979,<ref name=lahist>{{cite web|url=https://www.lahistory.org/resources/dictionary-louisiana-biography/dictionary-louisiana-biography-t/|title=Theriot Roy|publisher=''A Dictionary of Louisiana Biography'': Louisiana Historical Association|accessdate=June 2, 2020}}</ref> the festival was renamed the Louisiana Cattle Festival.<ref name=scholarship/> | Theriot (pronounced TERRY OH) was born in Erath in Vermilion Parish, twenty-six miles south of the larger [[Lafayette]], to Joseph "Lastie" Theriot (1879-1966) Theriot and the former Emerite Barras (pronounced BAH RA) (1886-1981). He was educated in Erath public schools, the University of Louisiana at Lafayette (at the time Southwestern Louisiana Institute) and the [[Tulane University]] Law School in [[New Orleans]]. On June 7, 1939, he began his law practice and soon took a role in civic affairs and organized the Abbeville Dairy Festival, first held in September 1949. In 1979,<ref name=lahist>{{cite web|url=https://www.lahistory.org/resources/dictionary-louisiana-biography/dictionary-louisiana-biography-t/|title=Theriot Roy|publisher=''A Dictionary of Louisiana Biography'': Louisiana Historical Association|accessdate=June 2, 2020}}</ref> the festival was renamed the Louisiana Cattle Festival.<ref name=scholarship/> |