I first heard this song in the 70's sung by Sarah Anne O'Neill. Carrickmannon lake is in Co. Down.

This is what i sing.

One evening for my pastime a ramble I did take
Down by a crystal fountain called Carrickmannon Lake
Down by yon crystal fountain an image I did view
For nature never did design an image fair as you

With courage bold undaunted, I boldly then set forth
Saying my delightful charmer my venus of the North
Give me my way or else I'll stray, my one and only joy
And sure t'would be a pity to refuse a harmless boy

With flashing eye and ne'er a smile she coldly said to me
Young man depart for in my heart no place is stacked for thee
And to my further pleading no answer would she make
But turned away and left me there by Carrickmannon Lake

Killinchy is my birth place, where first my breath I drew
Drumreagh it is my parents place, a thousand times adieu
All for your sake I'll passage take across the stormy sea
A pilgrim there to do or dare in North Americay

Now all young men take warning and shun Killinchy fair
Likewise sweet Carrickmannon for that false one lives there
and as the sun's declining o'er yonder hill so clear
The shadow of her dwelling in the lake it does appear