Penrose – an ancient place-name and surname derived from several villages in Cornwall, Wales, and the Welsh border country of England – would make for an even more unexpected alternative to quirky nature name Primrose. Intuitive nicknames Penny or Rosie make it feel more wearable.

Rarely heard in the US, Aneurin is best remembered in the UK as the Welsh politician, Aneurin "Nye" Bevan, who was instrumental in setting up the National Health Service when he was Minister for Health.

Country singer Travis Tritt is partial to the letter T for his children's names: he has a Tyler, a Tristan, and a son named Tarian. Tarian is a unisex Welsh name which, though used more for girls in Wales, would be perfectly acceptable here for a boy.

Tanwen is a far more singular and colorful alternative to Bronwen.

A little heavy on the fiber content; we prefer Bram. But Bran is also the Celtic god of the underworld, whose symbol is the raven.

This rare sixth-century saint's name has a modern, merry feel.

Emyr is a name that is well-known in Wales, but little heard outside of it. There are several well-known Emyrs, from the famed Welsh novelist and poet Emyr Humphries to footballer Emyr Huws.

A bit of a tongue-twister.

A sweet Marian name consisting of Mair, the Welsh form of Mary, and gwen, meaning "blessed, white".

Very popular in Wales; this could make a nice middle name in honor of a Grandpa Glenn.

Aeron was possibly a minor Celtic god of war, and is definitely a river in modern-day Wales.

Eigra is a name with a great mythological and literary past - it is the Welsh version of Igraine/Ygraine, who was the mother of King Arthur.

Tegwen is a Welsh name that balances between clunky and mystical, sweet and tough. Created back in the 19th century by blending the element teg "beautiful, pretty", with the element wen "fair, white, blessed", it may appeal to those who enjoy Teagan, Gwen, Gwendolyn, and Tesni.

Tolkien may have been inspired by this unisex name of a Celtic goddess of war. Welsh poet Dylan Thomas named his daughter the variation Aeronwy. With goddess names so hot for baby girls, this ethereal choice is one to consider.

The delicate and haunting Welsh Rhonwen is still a rarity in the U.S., where her English version Rowena is better known, but would be a lovely choice for any parent in search of a name that was both unusual and traditional, classically feminine yet strong.