Welsh Midi Files & Lyrics, of course, has "My Hen Wlad fy Nhadau" (is this name a notational difference?) in it, but no English words because, it says, "English words exist. However, I decline to provide them. This song is intended to be sung in Welsh. To sing it in English would be an insult to the Welsh and the Welsh language," adding "It is believed that a weaver from Mid Glamorgan, Evan James, wrote the words one morning in January 1856 to a tune composed by his son James James. The date of the song's adoption as the national anthem is subject to debate, but it is known that the tune was given prominence in 1874, and since that date has been considered the song which expresses Welsh nationalism."

~Masato