The Frog and the Crow of Ennow

I should be glad to get an answer to the following Query from some one of your readers:—I remember some few old lines of a song I used to hear sung many years ago, and wish to learn anything as regards its date, authorship,—indeed, any particulars, and where I shall be likely to find it at length. What I remember is,— "There was a little frog, lived in the river swim-o, And there was an old crow lived in the wood of Ennow, Come on shore, come on shore, said the crow to the frog again-o; Thank you, sir, thank you, sir, said the frog to the crow of Ennow, ... But there is sweet music under yonde…