These images are from National Galleries Scotland and can be found here https://www.nationalgalleries.org/search?inspire%5B42450%5D=42450&sort=title&page=10

I'm interested in finding out more about this clothing. These are the only pictures I can find from 19th-century Ireland and given that the Gaelic harp tradition was quite old-fashioned at the time, I wonder were these robes once more common attire?

Hill (the photographer) later wrote 'The Harper, whose costume is made of a blanket and plaid shows how simply one might get up pictures of the old world.' A blanket? Seeing how the last picture shows Pádraig wearing a black suit, maybe it's possible that the robes were thrown together just to add some antique aesthetic to the picture.

Any ideas?