If forum search is working, do a search on Ashton, as I asked those same questions when I first got the words.
However, in short,
"Peer rows" are pierrots, or clowns. I think it's a particular kind of clown, but someone from the UK would know better.
a "corky" is a practice ball in cricket, covered in cork. Let me see if I can find the earlier thread.
Blessigns,
Barbara