Ackerman(acreman) - an oxherder

Alconer - breeds, trains, hunts with falcons

Farmer

Fewterer - one who keeps the hunting dogs [put it in whatever category you put falconers and hawkers]

Fisherman

Forester - game warden or forest ranger

Fowler - one who hunts for wildfowl

Gamekeeper

Goatherd - one who looks after a herd of goats

Hawker - breeds, trains, hunts with hawks

Hayward - a tender of hedges

Horse trainer

Hunter

Huntsman

Master of hounds

Molecatcher

Ostler - cares for horses

Oyster raker - worker on an oyster fishing boat

Oysterer - one who catches oysters

Parker - caretaker of a park

Plowman

Rat catcher

Reaper

Sheepshearer

Shepherd - one who looks after a herd of sheep

Swineherd - one who looks after a herd of swine (sometimes pigherd)

Thresher

Tillerman

Trapper

Woolcomber

Woolman - sorts wool into differing grades

(Found on http://www.svincent.com/MagicJar/Economics/MedievalOccupations.html#Merchants)