I really didn't mean to cause any controversy, I was just excited to hear a recording of "Twa Brothers" from Ireland and wanted to share it.

To be honest, I don't know much about the persons behind the Song Collectors Collective.
Sam Lee is a "modern" (as in not quite my taste) folk revival singer, but he seems to be a nice person and I'm grateful to him for recording many of the remaining traveller families.

It's really interesting to compare the songs that he and his friends recorded with previous recordings, especially those that Jim and Tom Munnelly made because many come from the same family traditions.

Jim's right, though, it's a shame that the SCC doesn't provide more background info on where the singers learned their songs.
Many songs in the SCC collection are quite intriguing, and it would help clear some mistery if we knew here the singers learned them...

Here's what they have to say about Maggie Mongins:
Maggie Mongins - Tradition Bearer

There's a lot of interesting stuff to be found there, this song is related to the beautiful "When I Was in Horseback", from Mary Doran:
As I Went Out Walking One Fine Summer's Morning - Molly Collins

Here's an Irish version of the "House Carpenter":
The House Carpenter - Willie Heaney

This fragment may or may not be related to John Reilly's "The Well Below The Valley":
There's A Well Down In The Valley (fragment) - Julia Power

Here's another one of John Reilly's rare songs:
The Sea Captain (Take 3) - Tom Stokes

Like I said, it's all quite intriguing, but we know nothing about the song's origins, meanings, what the singer's think about their songs etc. and that's a shame.
That "House Carpenter", for example, could be either a true rare survival of a ballad thought extinct in Britain and Ireland or it could be learned from the radio/record of a Revival Singer, we just don't know...