Hi,

Rhiannon at the Welsh Folk-Song Society was kind enough to send copies of the Welsh versions in Journal of the Welsh Folk-Song Society: Volume 2, pages 48-52 by the Welsh Folk-Song Society- 1914. The first version was in the Celtic Review. Here's the second (with music):

No. 2. O fy Mab Anwyl

Lle buost ti neithiwr- from collection of folk songs at Carmathen, Eisteddfod, 1911

1. Lle buost ti neithiwr, mab anwyl dy fam?
Lle buost ti neithiwr, mab anwyl dy fam?
Pysgota fuais neithiwr,
O ta'nwch fy ngwely,
'Rwy'n a'm calon ar fyned i'r bedd.

* * * *

1. Where wert thou last night, dear son of thy mother?
Where wert thou last night, dear son of thy mother?
I was fishing last night,
Spread my bed,
I am sick and my heart is going to the grave.