My great grandfather, August "Gust" Moline (03 Oct 1838-10 Sep 1910), immigrated from Sweden in 1868 to Lee County, Iowa. He had nine children, including three sons, Harvey, Perry, and Harold. It is my understanding that Perry and Harold did not have any sons to carry on the Moline surname. My grandfather, Harvey, had two sons, Francis and Donald. It is therefore unlikely that your husband's great grandfather is the same August Moline as mine. I have seen other Moline families on the Internet that also had an August Moline that came from Sweden. It is possible that they are related to your husband's family. Good luck.