Braint

Brengain

Briallt

Buddug

One of the cute diminutives that's in vogue in Wales... or could be an alternative spelling of Kaydie.

Cadi

Calan

Cathi

Celyn

Eurgain

Gethin

Greta is an Old World name long tied to the iconic Garbo, but now synonymous with environmental activism.
 In the early 2000s, Greta was showing signs of a comeback, along with other Old Hollywood glamour names. It was even chosen by David Caruso and by Phoebe Cates and Kevin Kline for their daughters. Then in 2018, Swedish teen Greta Thunberg became very famous, very fast, for her anti-climate-change protests. Since then, it seems that the name is too tied to one figure for most parents' tastes... which is a shame.
 Greta is currently popular in Germany, Hungary, and especially Italy. Dr. Greta Guttman was a character on Mad Men, Greta Van Susteren is a familiar face on TV, and Greta Gerwig is an up-and-coming young actress and director.
 Greta returned to the Top 1000 in 1999, and rose as high as the 500s, before swiftly plummeting in Thunberg's early years of public activism. The name's highest point ever was at Number 318 in 1932, at the peak of Garbo's career, the year she starred in Grand Hotel and one year after she was Oscar-nominated for Anna Christie. 
 Greta should be a sweet spot name — sophisticated with a touch of retro glamour — and a hero name, and we hope it will regain some of its former glory. On the other hand, variant Gretel is still out strewing crumbs in the forest with brother Hansel.

Greta

Not a blend of Gwendolyn and Lillian! Gwenllian was a medieval Welsh princess noted for her bravery and beauty. Sometimes referred to as the Welsh Bouddica, Gwenllian resisted invasion by English and Norman forces.

Gwenllian

The Welsh version of William is almost unheard-of across, but it's fairly straightforward and could make a good heritage choice or alternative honor name.

Gwilym

Gwydion

Mabli is the sweet Welsh form of Mabel; like its English cousin, it’s starting to make a modest comeback in Wales as part of the trend for vintage <a href="https://nameberry.com">baby names</a> from a century ago.

Mabli

Macsen may sound like a modern invention, cousin to Jackson and Maxon, but it's a longtime Welsh variation of Maximus with evocative roots in legend.  Macsen Wledig is another name for the Roman emperor Magnus Maximus, was played an important role in Welsh history and was further immortalized in a poem celebrating his dream about his lover Elen.  Macsen also appears in Arthurian legend.

Macsen

Manon is an endearing French pet name for Marie or Marianne; it has the international yet straightforward feel that makes it a viable import. 
Manon of the Spring was a gorgeous French film, Manon Lescaut a 1731 novel by Abbe Prevost, set in France and Louisiana, that was controversial in its day. It formed the basis of operas by Puccini and Massenet, and several films and TV series.
 Manon is currently a Top 50 name in France and Belgium, and is also relatively common among Welsh speakers. British actors Damian Lewis, of Homeland and Helen McCrory have a daughter named Manon.

Manon

Mona had more than a moment in the sun, peaking in 1950 at Number 230 but falling off the Top 1000 completely in the late 1980s. Its similarity to the word "moaner" undercuts the appeal of its simplicity.  In one recent year, fewer than 100 baby girls received the name, and we don't see it reviving any time soon.

Mona

Madryn

Meilir

Short but energetic and substantial, Nia has special meaning for African-American parents, as it's one of the days of Kwanza. Nia also benefits by its similarity to (yet differentness from) the megapopular Mia.
 Current bearers include actresses Long and Vardalos (born Antonia), and popular television show Dance Moms star Nia Frazier.

The legendary St. Non was the mother of St. David, the patron saint of Wales. David was raised in a convent by his mother and went on to become a great teacher and bishop.  Non is also known as Nonna and Nonita, and is associated with Cornwall and Brittany along with Wales. While the name Non is well-used in Wales, it is largely unknown in the US and maybe be heard as the negative word "none" or prefix "non".

This was the name of several figures from Welsh mythology, and was also used by 12th-century chronicler Geoffrey of Monmouth in his Arthurian tales. The character of Percival was probably based on him.

Peredur

There's Rhys and there's Reese (now more popular for girls) and there's Reece, and we particularly like the traditional Welsh spelling, which entered the list in 2004, possibly influenced by Jonathan Rhys Meyers, of The Tudors, and Welsh-born actor Rhys Ifans.
 Always widespread in Wales, where it has deep historic roots, Rhys is also a high-ranking name in England, Ireland and Scotland.
 Former New Kid on the Block Joey McIntyre named his son Rhys Edward in 2009.

Rhys

Rhun

Tegai

Xavia

elsil's list "Modern Welsh Names" of 29 great name ideas: Aur - Xavia!

Modern Welsh Names

Mixture of modern Welsh names for girls and boys. Enwau modern Cymraeg ar gyfer genod a bechgyn.