My great great grandparents, James and Mary McGee (nee O'Brien) were married in Thurles, Tipperary, Ireland in 1822. It is improbable that she had married a Mr. Allison and gave birth at the age of 17 to Elizabeth in 1813, and four other Allison siblings in England through 1828 when she was having McGee children (William was first) in Tipperary beginning in 1825.