Mab, Mabbina - Joy
(Gaelic, Irish)
Macha, Machara - Plain
(Irish, Scottish)
Mada - From Mathilda
(Irish)
Madailein - From the Tower, Form of Madeleine
(Irish)
Mai, May - Pearl, Form of Margaret
(Scottish)
Maighdlin - Magnificent
(Irish)
Maillle, Mailsi - Pearl
(Irish)
Mair, Maire, Mairin, Mairi, Mairia, Mali - Bitter, Form of Mary
(Gaelic, Irish, Scottish, Welsh)
Mairearad, Mairghread, Mairead, Maggie - Pearl, Form of Margaret
(Gaelic, Scottish)
Mairead, Margaret - Pearl, Saint Name
(Irish)
Majella - Saint Name
(Irish)
Malise - God's Servant
(Gaelic, Scottish)
Malmuira, Malmuirie - Dark-skinned
(Scottish)
Malvina - Peaceful Face, Sweet
(Gaelic, Irish)
Maoli, Maola - Handmaiden
(Irish)
Margred, Mererid - Pearl, Form of Margaret
(Welsh)
Marsali - Pearl
(Gaelic)
Maude, Maiti, Maitilde, Maitilda - Strong Battle-maid, Form of Matilda
(Irish)
Maureen, Moreen - Great
(Celtic)
Maureen, Maurine, Moire, Moira, Maurya, Mairona - Bitter, Form of Mary
(Irish)
Mavis, Mavelle, Mavie - Songbird
(Celtic)
Maeveen, Mabina - Nimble
(Celtic)
Maeve - Mythical Queen
(Celtic)
Maeve, Mave, Meara - Joy
(Irish)
Megan, Meghan - Pearl
(Irish, Welsh)
Meinwen - Slender, Fair
(Welsh)
Melva - Ruler
(Irish)
Melva - Sweet Place
(Welsh)
Meredith - Protector of the Sea
(Celtic, Welsh)
Mildread - Gentle Advisor, Form of Mildred
(Gaelic)
Modlen - From the Tower, Form of Madeleine
(Welsh)
Moibeal, Maible - Lovable, Form of Mabel
(Gaelic, Irish, Scottish)
Moina, Moyna, Mona - Noble
(Celtic, Irish)
Moireach - Lady
(Scottish)
Monca - Wise
(Irish)
Moncha - Alone
(Irish)
Morag - Blind
(Gaelic)
Morag - Great One
(Scottish)
Moreen - Great
(Irish)
Morgan, Morgane, Morgana - Lives by the Sea
(Celtic, Welsh)
Morna - Dearly Loved
(Celtic)
Morrigan - War Goddesss
(Celtic)
Morrin, Muireann - Long-haired
(Irish)
Morwenna - Maiden
(Welsh)
Moya, Moira - Exceptional
(Celtic)
Muira, Muire - From the Moor
(Scottish)
Muirne - High Spirited
(Irish)
Murel, Muriel - Knows the Sea
(Irish)
Myrna, Merna, Mirna, Moina, Morna - Beloved
(Celtic, Gaelic, Irish)



