The verses are from the US National Gymanfa Assoc songbook. The book is not dated, but my father used it for the 1951 Gymanfa in Milwaukee. The Chicago Gymanfa was delayed this year, as a result of poor planning - and the old-line Welsh groups have been allowed to wither. But the Chicago Tafia and others are hoping to reinvigorate the scene - we are planning a reception for Bryn Terfel, a Welsh choir and other events for the Fall.

The translation in the book for the first verse is "bind us, unite us together..."
The next two verses end --
... Tyrd, gad i ni ymuno ....
and - to salvage respectibility -
..... Tryd, gad i ni briodi .....
Sian, you might also be interested in looking at David Llewellyn
David has written two new verses to Bugeilio'r Gwenyth Gwyn for his new cd that better fit the story, but he doesn't seem to have posted them yet.
Hwyl, Chris yn Chicago