Hi, Goldie. I think this is the song you're seeking.

THE MERCHANT'S DAUGHTER

In Derry lived a merchant and he had one only daughter,
And she had sweethearts plenty to court her night and day.
But when she had them gain-ed, their company disdain-ed
And many's the clever young man, heart wounded went away.

At length there came a suitor from Clady for to coort her,
With scorchin’, burnin’ flames for to thaw her frozen heart.
Says she, “Young man retire, your suit I don’t admire,
Nor is it my desire a single life to part.

“Your passion for me smother, and go and coort some other,”
So he went next Wednesday evening to one he had in view.
He went and courted Sally, and left disdainful Molly,
And with tears of melancholy he gave her time to rue.

About six weeks or better she wrote to him a letter,
And he wrote back an answer and sealed it with disdain;
Saying, “When you could you would not, and when you would you need not,
So read these lines and grieve not, my answer is quite plain.”

Now all ye maids take warning by me and my misfortune,
And never slight the young man that’s master of your heart;
For if you lightly spurn him, you’ll find him not returning,
Your days you’ll spend in mourning— ’tis I that feels the smart.

#34 in Volume 2 of The Complete Irish Street Ballads, collected and annotated by Colm O Lochlainn (Pan Books edition, 1984, page 68)

Volume 2 first published in 1965 as More Irish Street Ballads

Melody posted upon request. joe@mudcat.org