and the winner is Linda Fletcher...she knew three of the makers... of course one was a gift since it was her cup!!! below are the answers

top shelf, left to right: jeff brown, jeff brown, john zentner, unknown artist
middle shelf left to right: robert compt0n, bill van gilder, laura moon, ME!, byron temple
bottom shelf left to right: tara wilson, becca van fleet, dick lehman, linda fletcher
I will deliver Linda's prize to her at the potters market :-)