Captain Andrew is believed to be the progenitor of the largest branch of the Newcomb family in America, through his son, Lieut. Andrew. This is based largely on the research of John Bearse Newcomb, whose 1874 Genealogical Memoir of the Newcomb Family in America is an important reference. Many modern researchers question whether Captain Andrew was, indeed, the father of Lieutenant Andrew. The two men were living in America at the same time, but there is no primary documentation to indicate what, if any, their relationship was.