There was a Bridget Moloney who married Patrick O'Grady of Tipperary Ireland. They had sons John, Michael, Patrick and Timothy (did she name it after her brother?) She was married c 1818 and so would have been an older sister if related as she was probably 20 when she married. She and Patrick emigrated to the Toronto area of Ontario in 1847. Two of her sons married my great great grandfather's sisters. The family moved to Wellington County Ontario and a biographical entry for the family can be found in The History of Wellington County, published in 1909.