The image of the lovely Lady Sybil, tragic youngest daughter of the Crawley family on Downton Abbey is likely to go a long way towards reviving this almost forgotten name, off the list since 1966 and most popular in the 1920s and '30s.

Strong but sweet, Leah is a classic name that doesn't feel dull or dusty. It's got plenty of dignity, grace, and pluck, making it a solid choice in the 21st century.

Piper is a bright, musical name that entered the list in 1999, one year after the debut of the TV series Charmed, which featured a Piper, and it's been a consistent riser since. Piper Kerman is the memoirist whose prison experiences provided the basis for the hit Netflix series Orange is the New Black.

Sweet and stylish, with a sporty, energetic undertone, Everly is a name that ticks lots of boxes.

Simone, the elegant French feminization of Simon, strikes that all-important balance between unusual and familiar, and it's oozing with Gallic sophistication. A dated choice in its native France, gymnast Simone Biles brings new bounce and spark to name.

Jocelyn has gotten new life and popularity as a result of the current passion for lyn endings. Though it was a male name in medieval times, now Jocelyn couldn't sound more softly feminine.

The sassy, steel magnolia appeal of Oscar-winning Reese (born Laura Jeanne—Reese is her mother's maiden name) Witherspoon has single-handedly propelled this formerly boys’ name into girls' popularity.

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.

A strong, straightforward Irish unisex surname, with a merry glint in its eye, Reagan has been leaping up the popularity lists, to become one of the top girl names starting with R. Some will inevitably link it to President Ronald, but spell it Regan and it's a Shakespearean name: a daughter of King Lear.

Yes, Spencer makes a plausible and powerful female choice these days, though it's still used four times as often for boys as for girls. But Spencer does not swim that far beneath the Top 1000, used for nearly 250 baby girls last year.

Although the Kathryn spelling feels like a modern streamlining of this ancient royal and saints' name, it is in fact found back through history. At least one of Henry the Eighth's unfortunately wives sometimes spelled her name as Kathryn.

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.

A long-integrated French feminine form of Adrian, now overshadowed by the a-ending version, but still a valid option, with considerable substance and dignity—though these days more parents would probably choose Adriana.

The second most popular spelling of this name is also the most straightforward.

While Elliott and Elliot are well-established for boys, parents are now considering both these boy names for girls, too.

One of the most popular names in Scandinavia, Freja--or Freyja--was a major deity of Norse paganism. Beautiful, blonde and blue-eyed, she was the goddess of love, beauty and fertility. In the US, the name is most likely spelled Freya.