A recent search for Renaissance songs led to this version....similar beginning and then an abprut departure.

THE FROG AND THE MOUSE

There was a frog lived in a well.
Whipsee diddledee dandy dee.
There was mouse lived in a mill.
Whipsee diddledee dandy dee
This frog, he would a wooing ride
With sword and budkler by his side.
With a harum,scarum diddledum darum,
Whipsee diddledee dandy dee.

Refrain between lines

He rode till he came to Mouse's Hall
Where he most tenderly did call
O Mistress mouse, are you at home?
And if you are, will you please come down?

My uncle rat is not at home;
I dare not for my life come down
Then uncle rat he soon comes home;
And whoe's been here since I've been gone?

He's been a fine young gentleman,
Who swers he'll have me if he can.
And uncle rat gave his consent,
And made a handsome settlement.

Four partidge pies with season made,
Two potted larks and marmalade,
Four woodcocks and a venison pie.
I would that at thatfeast were I.