I've found this in Singing Together - BBC schools radio Spring Term 1967. They acknowledge the Oxford University Press for the words.

How long ago it seems, Lisa Lan,
Since we those carefree moments passed;
But still their memories with me gay,
Like fragments of old dreams, Lisa Lan

When we together went, Lisa Lan,
Through Fields all jewelled with cowslips gay,
And sang and laughed the hours away,
What happy times we spend Lisa Lan

Now we are far apart, Lisa Lan
And youth has fled, and joys are few,
The love we shared, the bliss we knew,
Remains within my hart, Lisa Lan


I also found this on the internet, in Welsh first but they give a different set of English words.

LISA LÂN

1. Bûm yn dy garu lawer gwaith
Do lawer awr mewn mwynder maith
Bum yn dy gusanu Lisa gêl
Yr oedd dy gwmni'n well na'r mêl.

2. Fy nghangen lân, fy nghowlad glyd
Tydi yw'r lanaf yn y byd
Tydi sy'n peri poen a chri
A thi sy'n dwyn fy mywyd i.

3. Pan fyddwy'n rhodio gyda'r dydd
Fy nghalon fach sy'n mynd yn brudd
Wrth glywed swn yr adar mân
Daw hiraeth mawr am Lisa Lân.

4. Pan fyddwy'n rhodio gyda'r hwyr
Fy nghalon fach a dôdd fel cwyr
Wrth glywed swn yr adar mân
Daw hiraeth mawr am Lisa lân.

5. Lisa, a ddoi di i'm danfon i
I roi fy ngorff mewn daear ddu?
Gobeithio ddoi di, f'annwyl ffrind
Hyd lan y bedd, lle'r wyf yn mynd.


1. Full many a time I came to woo,
Oft, Lisa came a courting you;
I kissed your lips when we did meet,
No honey ever was so sweet.

2. My dainty branch, my only dear,
No woman comes your beauty near;
'Tis you who with my passion play,
'Tis you who steals my life away.

3. Whene'er at eve I walk apart,
Like wax will melt my lovesick heart;
And but to hear the small birds sing,
The longing to my soul will bring.

4. Ah, will you come to bid good-bye,
When in the earth my form must lie?
I hope you too will there be found,
When men shall lay me in the ground


Jon