It has been suggested that "Rosemary Lane" - "Bell Bottom Trousers" originated from a ballad now lost. Here is a broadside that has the same meter as Bell Bottom Trousers, but elopement, rather than seduction, is the outcome. I think it belongs in the same mixed-up group of songs.

ENOCH KNOCKED ME OVER

Now once I loved a nice young girl,
A beauty I declare,
In fact I really thought that she
Was the fairest of the fair;
She lived at home with her Papa,
Old Enoch was his name.

Spoken- So one night I went to see him, and-

Chorus:
I knock'd the knocker, just as Enoch went to sup.
Enoch he knocked me down, Enoch he knocked me up.
Enoch knocked me over, Enoch knocked me sober;
O, I should like to knock Enoch as he knock-ed me.

He left me standing in the street,
And looking rather queer.
I never thought he'd serve me so,
When I went to see my dear;
But I waited there till it was dark,
When Sarah, she came out,
And seeing me in such a state,
Asked what is it all about?

Spoken- When I politely informed her-
I once knocked, etc.

I told her that I loved her true,
And hoped that she did the same.
Says she, my father's made a vow,
I shall not change my name,
So if you wish to gain my hand,
And married to me be,
Just go and ask Papa's consent,
Says I, he'll not agree.

Spoken- For you know very well that only a few minutes ago
I informed you that-
I only knocked, etc.

Says I, my dear, if you'll elope,
With me upon the sly,
Tomorrow we will married be,
Old Enoch then defy:
She gave consent, and off she went,
And preparations made,
For a moonlight trip that very night
While I went on parade.

She eloped with me that very night,
Next day we were married were,
And often since that happy time,
It does to me occur;
That if old Enoch I should meet,
I wonder what he'd say,
To hear his daughter's married, and
So happy all the day.

As sung by H. Darden. Firth c26(165), Bodelian Ballads, 1850-1899.