From History of Allegheny County, Pennsylvania:
His (John Carlin's) father (Patrick) was born in Ireland, in 1800; in 1818 came to America, and settled in Pittsburgh, where he resided until his decease, in 1840. His widow survived him forty-four years, and lived to the advanced age of seventy- eight. Patrick Carlin's principal occupation through life was building roads, and he was quite an extensive contractor in that line for several years. He married Mary McCaffrey, by whom he had following named children: John, James (deceased), Sarah A. (wife of John Daugherty), Isabella (married first to Charles McCullough, and afterward to John McGinnis), Catherine (deceased), Catherine, second (wife, of Thomas Bozel), and Jane.
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