Mara is the evocative ancient root of Mary, appearing in the Book of Ruth, in which Naomi, devastated after the death of her two sons, says "Call me not Naomi, call me Mara." It's one of the girl names starting with M that both fits in and stands out.

Of all the botanicals, Fern has been one of the slowest to move back from the front parlor into the nursery, despite the appealing girl character in the children's classic Charlotte's Web. Fern was most popular from the turn of the last century through the 1940s, reaching a high of #152 in 1916. We can certainly see her rejoining the long list of popular greenery names.

Jean Harlow (born Harlean Carpenter), the original platinum blonde bombshell, was a symbol of 1930s glamour, a factor that first Patricia Arquette and then Nicole Richie and Joel Madden probably had in mind when they gave their daughters the distinctive surname name Harlow.

Hadley, most famous as the name of Ernest Hemingway's first wife, is more sophisticated, professional, and modern than cousins Harley, Haley, or Hayden. The hit book The Paris Wife, a novel by Paula McLain told from the point of view of Hadley Hemingway (born Elizabeth Hadley Richardson), has helped popularize the name, which also appears on the vampire show True Blood. Hadley could become this generation's Hailey. Adley, a mashup of Hadley and Addie, has also appeared on the scene.

Brynn outshines the original Welsh Bryn in the popularity stakes. This simple, brisk name might be seen as a combination of Bree and Lynn, an androgynous-sounding choice that especially in this spelling is not truly unisex: Brynn, for boys, is not even in the Top 1000.

Lark is getting some new and well-deserved attention as a post-Robin and Raven bird name. Although it was first recorded as a name in the 1830's, it has never appeared on the Social Security list.

This attractive Scottish surname choice, has a certain amount of glamour thanks to feisty British-born red-haired forties Academy Award winner Greer Garson, who was born Eileen Evelyn Greer Garson--Greer was her Irish mother's maiden name). Greer was chosen much more recently by Kelsey Grammer for his daughter and by Brooke Shields in the Grier form. As a surname, it's associated with feminist writer/activist Germaine Greer.

The short but solid Irish surname Shea works well for both genders thanks to its soft, succinct sound. The traditional Irish form is Séaghdha, though it could also be used as a short form of Séamus, connected to James.

Minnie was wildly popular at the turn of the last century — it was the fifth or sixth most popular name throughout the 1880s — but is completely obscure in the US today. Blame Mickey's girlfriend. Regardless, it's possible that the up and coming trend toward old-fashioned nickname-names — think Maisie, Mamie, Millie — may give Minnie (all on its own, not as a short form of anything) a new moment in the sun.

All the old ae/ay middle names for girls are back--Kay, Fay, Mae/May, --and Rae is one of the coolest, used as such by celebrities as Mark Wahlberg and Daniel Baldwin.

Lane is a unisex name equally accessible to boys and girls. Breezy, cool and contemporary, it might equally put in mind country lanes and banks of wildflowers.

This ultrapopular boys' name is rapidly becoming a hot name for girls; admired for its buoyant Irish spirit.

The combination of Emily and Emma's popularity -- and the fact that Desperate Housewives star Teri Hatcher's daughter is named Emerson -- have put this formerly strictly boys’ name, embodying the gravitas of Ralph Waldo Emerson, in the limelight for girls.

Wynn is an attractive Welsh name, originally male but now also used for girls outside of Wales. The authentic feminine version would be Gwen, which derives from the same very productive gwyn element, making it a relative of all Welsh names ending -wyn or -wen, as well as the Irish Fin- names.

Though Tate is used almost exclusively for boys, we can see Tate as a stronger surname alternative to Kate or a clipped form of Tatum.

Tailored Tegan is a Welsh name, developed from the element teg meaning "beautiful, pretty". Sweet but tough, is interpreted to mean "darling, or favorite", and is also the Welsh word for toy.

This friendly Irish surname is catching on with girls, perhaps due to the easy Callie nickname.

Bryn is an up-and-coming gentle, yet substantial, Welsh name that would also be effective in the middle spot. In Wales it's a traditional boys' name, but it's far more popular for girls now in the US.

Ailbhe is a unisex Irish name that has appeared throughout Irish history, borne by a 6th-century (male) saint, and by a female warrior of Fianna, a legendary group of women warriors, led by Fionn MacCumhaill. Today, the name is predominantly used for girls, likely because it sounds similar to Alma, Ava, and Alba.

Lynn arrived in the 1940s, spinning off from the wildly popular Linda, to become a top midcentury middle name. Now, Lynn's in limbo.