English: of uncertain origin. 1. Reaney and Wilson cite 13th- and 14thcentury examples such as Richard Averil, which they associate with the name of the month (see April; the Old French word Avrill was taken into Middle English as Averil before being altered under Latin influence to April). 2. As a North American surname, it may be a habitational name from Haverhill in Suffolk, which is probably named from Old English hafri ‘oats’ + hyll ‘hill’. The traditional English pronunciation of this place name was Have-rill. Compare Avery.