Definition of "Jenny"

Jenny kissed me when we met,Jumping from the chair she sat in;Time, you thief, who love to getSweets into your list, put that in!Say I'm weary, say I'm sad,Say that health and wealth have missed me,Say I'm growing old, but add,Jenny kissed me.

1837, Leigh Hunt, Jenny Kissed Me

All this I recollect, but little more, except my mother gave me several beatings for calling my sister "Jenny", which I had learnt to do from others who knew her; but when my mother heard them, she was always very angry, and told them that her child had not such a vulgar name; at which many would laugh, and make a point of calling out "Jenny" to Virginia whenever they passed and saw her at the door.

1840, Frederick Marryat, chapter IV, in Poor Jack