Hmmm....yes, not so easy. The young man to the left of the groom in the Woolley photo could possibly be Pietro (being the only son in the family), and I'd say that the young ladies in front of the Trimarco parents were Trimarco girls, while the ones on the right could be Woolley girls (none of the Woolleys look terribly happy!) The lady seated second from the left in this picture looks to be the same person sitting on the floor at the right in the Trimarco wedding photo, and the little girl in the centre of the Trimarco wedding appears to be the same as the one front right in the Woolley photo.
I take it there were no names posted on the photo labelled "Kate Trimarco's wedding"?