"small pie," 1710, from patti-pan (1690s) "something baked in a small pan," from French pâté, from Old French paste (see paste (n.)). Patty-pan "small pan in which pasties are bakes" is by 1710.
patroon
patsy
patten
patter
pattern
patty
patzer
*pau-
paucity
Paul
pauldron