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Gender: Male Meaning of Gwilym: "resolute protection" Origin of Gwilym: Welsh variation of William

The name Gwilym is a boy's name of Welsh origin meaning "resolute protection". Gwilym and is often added to lists like Cool Boy Names From Around the World and discussed in our forums with posts like "Baby a Day".

From the experts:

An unusual version of William, helped or hindered by a slight baby-talk feel.

Find other names based on Gwilym using our baby name generator.

Famous People Named Gwilym

Gwilym Lloyd George, 1st Viscount Tenby, former British home secretary
Gwilym Williams, former Archbishop of Wales
Gwilym Simcock, Welsh pianist and composer
Gwilym Bowen Rhys, Welsh singer and guitarist, member of the band Plu and former member of the band Y Bandana, clogmaker

Pop Culture References for the name Gwilym

Gwilym Owain Herondale (William Herondale), in books Clockwork Angel, Clockwork Prince, and Clockwork Princess. Lived with Henry and Charlotte Branswell in the London Institute in the Victorian era, and was a crack hand with a throwing knife.