When George Venis was born in May 1845, in Boone, Indiana, United States, his father, John Venis, was 29 and his mother, Martha Chase, was 19. He married Lucy Wainscott on 23 February 1868, in Colfax, Perry Township, Clinton, Indiana, United States. They were the parents of at least 2 sons and 3 daughters. He lived in Washington Township, Boone, Indiana, United States in 1860 and Jackson Township, Clinton, Indiana, United States for about 10 years. He died on 26 August 1918, in Colfax, Perry Township, Clinton, Indiana, United States, at the age of 73.