Sorry 'bout that. I was there looking at the Irish quoted from the Dingle map and realised that I didn't have a bull's notion what any of it meant (except for gallaun and that's only 'cos its a term in regular use). Ah... the wasted years of education. The Pol agus Niamh 'primary school chant', mutating here and there into Peter and Jane (I don't know about Wideford's 'Janet' or your 'Oisin', there must be several forms, or seeing as this is a megalithic forum - 'local variations') marched into my mind and there they were, looking at the tomb.
I can't even remember what they generally did, or the Irish for it, just the tune of the chant - a kind of spaced out flat monotone dropping on the last syllable of each line.
Pol-ag-us-Niamh-looked-at-the-tomb. Then-they-went-home.
Unlikely I suppose.