When Capt Charles Sias Sr was born in 1742, in Rockingham, Windham, Vermont, United States, his father, John Sias Jr, was 36 and his mother, Hannah Sampson, was 32. He married Jane McCrillis before 1763, in Peacham, Caledonia, Vermont, United States. They were the parents of at least 8 sons and 3 daughters. He died on 7 March 1837, in West Derby, Orleans, Vermont, United States, at the age of 95, and was buried in Newport, Orleans, Vermont, United States.