I did a research for Due sorelle stessa terra Dungiven contea di Derry
for the lyrics of The Benedy Glen (traditional Irish)
Winding River Roe (traditional Irish)
Hill of Thieves (Dear Dillon),
I'm sorry but the blog is in Italian, however many references to the links are on pages in English
https://terreceltiche.altervista.org/due-sorelle-stessa-terra-dungiven-contea-di-derry/

Roe is the river that flows through Dungiven

Priory walls: the ruins of the monastery enclose what is (wrongly) believed to be the tomb of Cooey-na-Gall O'Cahan. Known as Dungiven Priory, it was founded by Saint Naechtain in the 7th century, succeeded by a 12th century Augustinian Canon Priory (St Mary's Abbey), associated with the O'Cahan family. As it happens we find a clootie well right in the immediate vicinity of the ruins. Literally "fabric fountains" are pools of water or fountains, with a tree next to it, where strips of fabric are tied to the branches, in the hope of healing from an illness

O'Cahan clans ruled this area for hundreds of years. They were one of the most powerful clans in Ulster.
Cooey-na-Gall O'Cahan, Cooey from the Gaelic Cu-Mhaighe which means hound.
Benbradagh (literally the hill of thieves) - is a mountain overlooking Dungiven