My ggreat grandfather was Mathias Irmen b. 1841. According to his obituary he came from Aflen. The 1900 census taken in Washington, Buchanan, Iowa shows that he immigrated in 1871. He married Francisca Wieser b. 1849, on Nov. 1 1875 in Buchanan County, Iowa. I have been unable to find any more info on him.I have much information on his descendants but nothing on his ancestors. Any help would be appreciated.