"Jack Monroe" (Roud 268 and Laws N7), also known as "Jack Munro," "Jackie Monroe," "Jack-A-Roe," "Jackaroe," "Jackaro," "Jackie Frazier," "Jack the Sailor," "Jack Went A-Sailing," "The Love of Polly and Jack Monroe," among other titles, is a traditional ballad of uncertain (though presumably British) origin.