When Cyrus Pruett was born on 29 March 1867, in Texas, United States, his father, Henry B. Pruett, was 44 and his mother, Elmira Wixom, was 40. He married Mary Ray on 24 August 1893, in Bell, Texas, United States. They were the parents of at least 3 sons and 2 daughters. He lived in Walker, Texas, United States in 1935 and Justice Precinct 1, Cherokee, Texas, United States in 1940. He died on 15 February 1942, in Rusk, Cherokee, Texas, United States, at the age of 74.