Haddock Family History

English:: variant of the Lancashire surname Haydock a habitational name from a place so called near Liverpool which is probably named from Welsh heiddog ‘characterized by barley’.

From the Middle English personal name Addoc, a pet form of Old English Æddi (itself perhaps derived from one of the names in ēad ‘wealth, prosperity’) with prosthetic H-.

From Middle English hadduc ‘haddock’, hence a metonymic occupational name for a fisherman or fish seller or a nickname for someone supposedly resembling the fish.