It’s often said among genealogists that the best way to get your family tree researched for free is to run for office. Even before former South Bend Mayor Pete Buttigieg began to ascend the Democratic ranks after his victory in Iowa, various articles were published about his father’s Maltese origins and his mother’s longer-tenured American roots.But none of them, until now, note that among Buttigieg’s mother’s ancestors we can find his great-great-great-great-grandfather, a Tennessee congressman and planter named William Marshall Inge. Inge was one of the pioneer settlers of Sumter County, Alabama, after land there was ceded to the...