FiolarLammas is not Lamb Mass ... This may be of help.
"Lammas takes its name from the Old English "hlaf," meaning "loaf" and "maesse," meaning feast. Lammas has often been taken to mean Lamb-mass, because on August 1, the next day, is the Feast of St. Peter's Chains, at which lambs are taken to church for blessing."
Cheers!
Ian