Found with a Google of

"Mae 'Nghariad I'n Fenws"

in quotation marks (as is)

My love is like Venus,
My love is so fair,
My love is more comely
Than roses most rare.
My love is the fairest,
Among all the youth.
And this is no boasting,
It is but the truth.

2. She's fairest and dearest
She's ever so bright;
Her cheeks are so ruddy,
Her teeth are so white,
?
Her brow is so fine;
Oh! how I would love her
If she would be mine.

Mae 'nghariad i'n Fenws,
Mae 'nghariad i'n fain,
Mae 'nghariad i'n dlysach
Na blodau y drain.
Fy 'ngariad yw'r lanaf,
A'r wynna'n y sir.
Nid canmol yr ydwyf,
Ond d'wedyd y gwir.

2. Wych eneth fach annwyl
Sy'n lodes mor lan,
A'i gruddiau mor writgoch,
A'i dannedd man man,
A'i dau lygad siriol,
A'i dwy ael fel gwawn;
Fy nghalon a'i carai
Pe gwyddwn y cawn.