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H
Hedd
- peace
Heddwyn
- blessed peace
Hefin
- summer weather
Heilyn
- cup-bearer
Hergest
Hiraethog
Hiral
- long brow
Huw
Hywel
- eminent
Hywyn
I
Iago
- welsh form of
James
Ianto
Idloes
Idris
Idwal
Idwallon
Iddawg
Iemwnt
Iestyn
- the just
Ieuaf
- from youngest
Ieuan
- welsh form of
John
Ifan
Ifor
Ilan
Illtud
- ruler of a town
Inigo
Inir - honour
Ioan
Iolo
Ionwen - fair lord
Iorweth - worthy, valuable lord
Ioseff - welsh form of Joseph
Irfon - the anointed one
Irwyn
Isan
Islwyn
Ithel
Ithnan
- the strong
sailor
Iwan
Dafydd
- beloved
Dewey
- prized - dew
Dyfan
- Tribe Ruler
Dylan
- Man from the sea
Dynawd
- Given
L
Lawnslod
Lewis
Luc
Lyn
Lynfa
- place of the
lake
Lynfel
Ll
Llawdden
Llecheu
Llefelys
Lleision
Lleufer
- light
Lliedi
Llifon
Lludd
Lluddocaf
Llwyd
- grey, holy
Llyfni
Llyndaf
Llynnor
Llyr
Llywarch
Llywel
- leader
Llywelyn
- leader
M
Mabon
- youth
Macsen
Machno
Machreth
Madog
Madrun
Mael
- prince
Maelgad
- prince of
battle
Maelgwyn - metal-chief
Maelog
Maelrys
Maldwyn
Marc
- the biblical name
Mark
Math - treasure
Matholwch
Mathonwy
Mechain
Medrawd
Medwyn
Meidrym
Meigant
Meilyr
Meirchion
- from horses
Meirion
Melfyn
Meredudd
Merfyn
Meurig
Mihangel
Milwyn
Moelfed
Moelwyn
- white, hare
Mordai
Mordeyrn
- great monach
Morfael
- great prince
Morgan
Morien - sea-born
Morlais
Morus
Mostyn - field fortress
Myfyr - thought
Myrddin
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