Fiona entered the American consciousness with the opening of the 1954 Broadway musical Brigadoon, but didn't come onto the U.S. popularity list until 1990.

Ferelith is an unusual yet deeply-rooted Scottish girl's name, also found in ancient Ireland and drawn from the Gaelic Forbhlaith or Forbflaith. While it went through a period of dormancy after the Middle Ages, there are some modern women named Ferelith, including actress Ferelith Young and Princess of Denmark Anne Ferelith Fenella Bowes-Lyon.

Foghlaidh is a masculine Irish Gaelic name with ancient Celtic roots. Pronounced approximately as 'FOW-lee' or 'FOY-la,' this distinctive name derives from the Irish word 'foghlaí' meaning 'plunderer' or 'pirate,' suggesting associations with boldness and adventure. The name carries echoes of Ireland's rich history of seafaring and warrior traditions. Extremely rare even within Ireland, Foghlaidh represents a deeply authentic connection to Gaelic linguistic heritage. The unusual spelling, characteristic of Irish Gaelic with its silent consonants, gives the name a visually striking quality. Foghlaidh would appeal to parents with strong Irish heritage seeking an uncommonly used traditional name. Its rarity ensures individuality while its pronunciation challenges make it a conversation starter.

Floraigh is an uncommon feminine name with Celtic, particularly Irish, influences. It appears to be a creative variant of Flora, which derives from Latin meaning 'flower' or 'blossom,' combined with the Irish '-aigh' suffix that adds authentic Gaelic character. The name evokes images of natural beauty and springtime abundance. Quite rare in usage, Floraigh appeals to parents seeking names with botanical connections and Irish heritage. The spelling creates a distinctive appearance while maintaining a pronunciation similar to 'Flora' with a slight emphasis on the final syllable (FLOR-ay). This name combines floral delicacy with Celtic strength, offering a unique option that stands out while still connecting to traditional naming patterns.