A garb is a bundle of grain, bound about the middle; the grain is wheat, unless specified otherwise. Garbs are ancient charges, dating from 1244 in the arms of the Earls of Chester [Asp2 219].
In period blazon, the term “sheaf” is considered synonymous with “garb”; in particular, the term “oatsheaf” was used to refer to a garb of oats. However, for charges other than grain, the term “sheaf” refers to a specific arrangement of charges (see sheaf); some Society armories have an explicit number of grain stalks (e.g., five) in this arrangement, and blazoned as a “sheaf”, despite the chance of confusion.
Teresa la Marchant bears: Per pale sable and Or, a garb counterchanged.
Njall of Fur bears: Argent, three garbs azure.
Medb ingen Muiredaich bears: Vert, three garbs argent.
Otuell Gowe bears as a badge: In pale an oatsheaf issuing from an open well Or.