Theodore Pridmore was born on April 17, 1755, in Princeton, New Jersey. Theodore Pridmore served in the military in 1776 when he was 21 years old in Frankstown. He served at Fort Roberdeau in 1778.
Brother of Jonathan Pridemore, he served as a recruitment sergeant for Fort Roberdeau
He married Mary Guthrie in 1779 in Pennsylvania. He lived in Pennsylvania until the late 1780s.
In 1790 he moved to South Carolina, then moved from there to Virginia. He died in 1839 in Lawrence, Indiana, having lived a long life of 84 years, and was buried in Shoals, Indiana.