Andrew, William, Cornelius, John, and Elijah were brothers.William is my GG Grandfather and his second wife Nancy Tanner my G Grandmother. The Poulson boys came from Virginia to Ohio about 1800. Their father was Cornelius, mother unknown. William and Nancy had 9 children. Daughter Nancy married George Prouse in Pickaway Co., OH in Jan 1, 1857. After the death of George Prouse in 1877 Nancy moved to Hoopeston, Vermilion Co., IL. I suspect that an uncle or brother lived there also.