OK. we're going for the accurate Welsh version, so 'ac' is fine, (we leave it to singers whether to drop the 'c' in performance).
Still looking for confirmation (or agreement) on the line 'Wy'n ei gwneud hi yn o lew'. I'll happily defer to the Welsh speakers.
Also, if this appears in 'Gweithiau Ceiriog' did Ceiriog Hughes add any verses, and need to be included in the 'authorship' below the title ?
To quote Johnny Nash "There are more questions than answers!"

Nigel