Sebastian is an ancient martyr's name turned literary, and Little Mermaid hero—think Sebastian the Crab—that's more popular than ever, as a classic-yet-unconventional compatriot for fellow British favorites T Theodore and Oliver.

Name with connotations both mystical and tragic, newly popular in Europe. For English speakers, though, this name might be ruined by its homonym ruin.

In one recent year there were 60 baby girls in the US named Lark....and only eight baby boys. But there's no reason this bird name can't also be masculine, especially given that Robin is making a comeback for boys and Sparrow is a notable starbaby boy (he's Nicole Richie and Joel Madden's son).

Quill is a unique possibility for the child of writers -- even if they do use computers rather than pens; could also serve as a rhyming tribute to an ancestor named Gil, Phil, or Bill (or Jill).

Make that bird name, and while it does work for both genders, it's far more popular for girls, via Raven Symone.

In the garden of herb names, Rosemary and Basil are perennials and Sage is a new upshoot, but Fennel is a real rarity. The aniseed-tasting plant, used to add flavor to dishes around the world, gets its name from the Latin word feniculum, meaning "little hay".

If Viola is a credible girl's name, why not the mellow Cello for a boy.