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What does Gwilym mean?

Gwilym Pronunciation of Gwilym [gwilym] as a boys' name has its root in Old German, and the meaning of the name Gwilym is "determined protector". Gwilym is an alternate form of Guillaume (Old German): French variation of William.

Associated with: determined (faithful), protector (defender).


1 relation via Guillaume: Gwillyn.

Creative forms:
(male) Gailym, Gilym, ..

(female) Gwila, Gwilah, ..

Middle name pairings:
Gwilym Casey (G.C.), ..

How popular is Gwilym?

Gwilym is an unusual given name for males. Gwilym is an unusual last name too for both adults and children. (2000 U.S. Demographics)

Gwilym has not made it into the list so far. (Top Baby Names, 2015)

Top 2000 baby names ranking of Gwilym name in U.S.

Top 100 baby names ranking of Gwilym outside U.S.

Similar Names

Gwilym is pronounced similarly to Gilam. Other suggested similar names are Gail, Gaile, Gaill, Gaille, Galyn, Garlyn, Gil, Gilad, Gilby, Gildo, Giles, Gili, Gill, Gilon, Glyn, Gridly (see Gridley), Gwayn, Gwin, Gwinn and Gwyn. These names tend to be more commonly used than Gwilym.

See names
in meaning and etymology.