This is an old Irish name associated with such heroes as the seventeenth century chieftain, scholar and poet Manus O'Donnell. It is likely a variation of Magnus, itself derived from the Latin word for "greatest", though the literal Latin translation of manus connects it to the hand, and more figuratively to work, fighting, violence, writing, and a group of soldiers.

Mirren is a lively and attractive Scottish name, popular in its native country but best known outside Scotland as the surname of the English actor Dame Helen Mirren. It is thought to be a Scottish derivative of the name Marion, from Mary.

When British rocker Steven Patrick Morrissey decided to use his last name alone, it became a viable option for baby namers, a lot cooler than Morris or Maurice.

Meabh, the native Irish spelling of Maeve, is in the Top 100 in Ireland and becoming more popular here in its Anglicized form. Outside of Ireland, life will be easier with the Maeve spelling of this lovely queen's name.

Makena may be one of the names with the most diverse range of possible roots. It can be a spelling variation of the Scottish surname McKenna, or a name from the East African Meru community with a happy meaning. Makena is also a Hawaiian place name that refers to a town on Maui, which may be drawn from the Hawaiian Makana, meaning "gift".

A variation of Maria and Mary, used as a diminutive in Estonia, Croatia, Macedonia, The Netherlands, and Slovenia, and occasionally as a respelling of the Irish Máire. In the first instance, it may be pronounced MA-reh, while in the latter, it may be more like MA-r(y)uh.

It could also be a form of Maren or Mairead, pronounced MEHR (like the word for a female horse).

The popular Irish name Muireann comes from a mythical mermaid who was tranformed into a woman by a saint. Pronunciation is like the surname of the actress Helen Mirren, but with the spin of a w sound after the initial M.

An X-ending surname less common than the Jolie-Pitt-inspired Maddox. Grandparents might still associate it with the old TV crime show. 

Both Maire and Mare have begun making inroads with parents seeking novel yet authentic ways of honoring an ancestral Mary. The Finnish variation derives from the word mairea, meaning "sweet."

This pleasant modernization of a dated original is still rare but has real modern possibilities. Alternate versions include Merial and Meryl.

The 6th century Irish saint Mirin emigrated to Scotland and now is the patron saint of both the Glasgow suburb of Paisley and the game of football. Mirren is one modern spelling; the Cornish Merryn, best known as the name of the seacoast town St. Merryn, is also related. The name is usually used for girls.

Although the Mc or Mac prefix always means "son of", the first names McKenna and MacKenna are used in the US exclusively for girls, with the McKenna spelling outpacing this one 14 to 1. There are no boys recorded with either spelling of the name.

A jovial and jaunty Irish name, the title of a long-gone TV crime drama, this would make an appealing choice. Slight downside: Maddy is already a mega-popular nickname for Madeline/Madelyn and Madison, so this Mad- name might not feel as distinctive as the stats would suggest.

An Anglicized form of Medb borrowed by both Shakespeare and Percy Bysshe Shelley for the of queen of the fairies. Perfect if you want something both adventurous and simple - though you could use it as a nickname for Mabel, Mirabel, Mabli, or Amabel too.

Classic Irish surname with a lot of character and some interesting associations: the title character of a Samuel Beckett novel and basketball great Karl Malone. Malone is a popular name for baby boys in France.

McDermott is a common Irish surname that means, as all Mc or Mac names do, "son of" --then Dermott or Dermot, which is an Anglicization of the Irish Gaelic Diarmaid. The legendary Diarmaid was the lover of Grainne and the real King Diarmaid, in the twelfth century, first invited the English into Ireland. Actor Dermot Mulroney made his name famous in the U.S.

Common in its native habitat, and worth consideration by parents in search of an authentic Irish name, though a pronunciation challenge.

Unusual Mary variety with literary underpinnings, most famously as a character in J.M. Synge's Riders to the Sea. You may have to do constant explaining of the spelling and pronunciation, but if you're looking for a distinctive and attractive form of Mary, you've found it.

A name that has many close, more familiar relatives, like Mira and Myra.

Magee became one of the first gender-bending Irish surname names so popular today thanks to New York television newswoman Magee Hickey. In case you don't know, the g is hard, as in Maggie, but with the opposite emphasis.