Geach Family History
Geach Name Meaning
of uncertain origin. The Middle English form Gach(e) later developing to Gag(g)e Gayge and Geach might be a variant of the Old French personal name Gace (see Gaze ) with the same phonetic variation as seen in Gooch for Goss. The Middle English surname Gace appears in Devon where Gach(e) is first recorded but no evidence has been found of Gach(e) as a given name or that might link bearers of the two surnames. Compare Gage .
Source: The Oxford Dictionary of Family Names in Britain and Ireland, 2016