Name	Meaning	Gender	Origin	Similar
Gwladys	A variant of Claudia, meaning lame.	Female	Welsh	-
Gwrddywal	Legendary son of Evrei.	Male	Welsh	-
Gwres	Legendary son of Rheged.	Male	Welsh	-
Gwyddawg	Legendary son of Menestyr.	Male	Welsh	-
Gwydre	Legendary son of Arthur.	Male	Welsh	-
Gwydyon	Legendary son of Don.	Male	Welsh	-
Gwylim	A Welsh variant of William, meaning resolute protector.	Male	Welsh	-
Gwyn	White or handsome.	Male	Welsh	-
Gwyn	Diminutive of Gwyneth: White. Fair. Happiness. Blessed.	Female	Welsh	-
Gwyndolen	White browed.	Female	Welsh	-
Gwyndolyn	Fair; blessed.	Female	Welsh	-
Gwynedd	White, happiness, blessed. Also a North Wales county name.	Female	Welsh	-
Gwyneth	white; blessed, fortunate	Female	Welsh	Gwynne, Wynny
Gwynfor	Fair lord or fair place.	Male	Welsh	-
Gwyngad	Legendary son of Caw.	Male	Welsh	-
Gwynn	Handsome. Son of Nudd.	Male	Welsh	-
Gwynn	Fair; blessed.	Female	Welsh	-

Gwynne	White.	Female	Welsh	-
Gwynneth	White. Fair. Happiness. Blessed.	Female	Welsh	-
Gwyr	Pure or from Gower.	Male	Welsh	-
Gwystyl	Legendary son of Nwython.	Male	Welsh	-
Gwythyr	Legendary son of Greidyawl.	Male	Welsh	-
Hayden	Variant of Haydn: Fire. Derived from the Celtic name Aidan.	Male	Welsh	-
Haydn	Fire. Derived from the Celtic name Aidan.	Male	Welsh	-
Haydon	Variant of Haydn: Fire. Derived from the Celtic name Aidan.	Male	Welsh	-
Heilyn	Legendary son of Gwynn.	Male	Welsh	-
Hen Beddestyr	Legendary son of Erim.	Male	Welsh	-
Hen Was	Old servant.	Male	Welsh	-
Hen Wyneb	Old face.	Male	Welsh	-
Heulwen	Sunshine.	Female	Welsh	-
Howel	Variant of Hywel: Eminent. Attentive.	Male	Welsh	-
Howell	Variant of Hywel: Eminent. Attentive.	Male	Welsh	-
Hu	Welsh form of Hugh 'intelligent'.	Male	Welsh	-

Huabwy	Legendary son of Gwryon.	Male	Welsh	-
Huarwar	Legendary son of Avlawn.	Male	Welsh	-
Hueil	Legendary son of Caw.	Male	Welsh	-
Huey	Variant of the Latin Hugh. A thinker. Intelligent.	Male	Welsh	-
Hugh	Variant of the Latin Hugh. A thinker. Intelligent.	Male	Welsh	-
Hughie	Variant of the Latin Hugh. A thinker. Intelligent.	Male	Welsh	-
Huw	Welsh form of Hugh. A thinker. Intelligent.	Male	Welsh	-
Hydd	Deer.	Male	Welsh	-
Hywel	Eminent.	Male	Welsh	-
Iago	Supplanter. Can be either a variant of James or Jacob. Associated with the wicked Iago in Shakespeare's Othello'.	Male	Welsh	-
Iddawg	Legendary son of Mynyo.	Male	Welsh	-
Iddig	Legendary son of Anarawd.	Male	Welsh	-
Idella	Bountiful.	Female	Welsh	-
Idris	Fiery lord.	Male	Welsh	-
Ifor	Lord. Can also be a variant of Ivor.	Male	Welsh	-
Indeg	Legendary daughter of GanKy.	Female	Welsh	-

Iob	Diminutive of Iorwerth: Worthy lord. Derived from 'ior' and 'gwerth'. Legendary son of Maredudd.	Male	Welsh	-
Iolo	Diminutive of Iorwerth: worthy lord.	Male	Welsh	-
Iona	Legendary king of France.	Male	Welsh	-
Iorwerth	Worthy lord. Derived from 'ior' and 'gwerth'. Legendary son of Maredudd.	Male	Welsh	-
Isolda	Beautiful. Fair.	Female	Welsh	-
Isolde	Variant of Isolda: Beautiful. Fair.	Female	Welsh	-
Ithel	Generous lord.	Male	Welsh	-
Iustig	Legendary son of Caw.	Male	Welsh	-
Ivor	Variant of Ifor: Lord. Can also be a variant of Ivor.	Male	Welsh	-
Iwan	Welsh form of John 'God's gift'.	Male	Welsh	-
Jennifer	white wave, white spirit, white cheeked	Female	Welsh	Jenna, Jenny, Jenni, Jennie, Jennylynn, Jenavieva, Vieva, Genavieve
Jesstin	Variant of Justin 'Just; upright; righteous.'.	Male	Welsh	-
Jestin	Variant of Justin 'Just; upright; righteous.'.	Male	Welsh	-
Jestina	Just; upright. Feminine of Justin.	Female	Welsh	-
Jestine	Just; upright. Feminine of Justin.	Female	Welsh	-