I think I have a census record and a little info in your family. George W. Allen married Melissa Allen and then a Penelope Johnson. I have the 1880 census for Monona county that shows a son Charles age 16. Charles had a brother George Allen that married a Elizabeth Ellen Green in 1892 in Monona county. They eventually divorced and she had a son William Henry Green in 1895. William's birth record states his father to be George Allen but in other records mentions a Dick Kellogg. Anyway I also have a copy of George Allen's obit I found on line. Would be happy to exchange info.