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Surname Etymology and Meaning of GUY

Name meanings and etymologies are often disputed. The information here is compiled from freely available sources, and no claims whatsoever are made for accuracy, either historical or etymological.

A term given in Gaul to the mistletoe, or cure-all; also a guide, a leader or director, from Guia, Sp. and Port.

Source: An Etymological Dictionary of Family and Christian Names With an Essay on their Derivation and Import (1857).

1. English (of Norman origin) and French: from a French form of the Germanic personal name Wido, which is of uncertain origin. This name was popular among the Normans in the forms Wi, Why as well as in the rest of France in the form Guy.
2. English: occupational name for a guide, Old French gui (a derivative of gui(d)er ‘to guide’, of Germanic origin).

Source: Dictionary of American Family Names (2003)