Baby Names of Ireland

Ferdia: Meaning, Pronunciation and Origin

Ferdia is an Irish boy’s name of uncertain meaning, sometimes read as “man of smoke,” borne in legend by Cú Chulainn’s foster-brother. Here’s how to say it, where it comes from, and names that go well with it.

Updated November 2026

How to say it
FER-dee-aThree syllables, stress on the first
Gender
Boy
Popularity in Ireland
No. 348 for boys (2025)

How do you pronounce Ferdia?

Ferdia is pronounced FER-dee-a. It has three syllables, with the stress on the first.

What does Ferdia mean?

Ferdia, also spelled Fer Diad, is a warrior in the Ulster Cycle of Irish legend. His name’s meaning is uncertain: the first part is fer, “man,” and the whole has been read as “man of smoke,” “man of the pair” or “man of two feet.” It may come from the place-name Áth Fhir Diad, Ardee in County Louth, which is said to be named after him.

In the Táin Bó Cúailnge, Ferdia is Cú Chulainn’s foster-brother, trained with him by Scáthach, but he fights for Connacht, and Medb sends him against Cú Chulainn at a ford. In the Book of Leinster telling they fight for four days, sharing healing herbs and food across the ford after the first day. On the fourth, Cú Chulainn kills him with the Gáe Bulga.

Sources: Wikipedia, CELT, University College Cork, Ó Dónaill's Irish dictionary (teanglann.ie), Behind the Name.

In 2025, 11 baby boys in Ireland were named Ferdia, which made it No. 348 that year. That's up from No. 421 ten years earlier. It was most popular in 1993, when 10 baby boys were named Ferdia, No. 205 that year. The most babies got the name in 2021: 16. It first appears in the records in 1984, with 3 baby boys.

0102019701980199020002010202016 in 202111 in 2025
Baby boys named Ferdia each year. Source: Central Statistics Office, Irish Babies’ Names 2025 (data: table VSA50, boys' names, CC BY 4.0).
See the numbers by year
YearBabiesRank
202511No. 348
20247No. 472
20238No. 436
202212No. 349
202116No. 279
202011No. 361
201912No. 335
20185No. 572
20178No. 418
20168No. 412
20158No. 421
20147No. 468
20135No. 534
20127No. 457
201111No. 366
201010No. 373
20096No. 472
20087No. 444
200713No. 282
200611No. 282
20058No. 302
20046No. 351
20035No. 375
20025No. 348
20014No. 347
20003No. 390
19996No. 266
19987No. 229
19977No. 261
19969No. 234
19954No. 301
19945No. 263
199310No. 205
19929No. 210
19914No. 288
19893No. 307
19886No. 235
19866No. 247
19843No. 318

Ferdia in Ogham

Ogham is the oldest way of writing Irish. It was carved along the edges of standing stones, mostly between the 4th and 6th centuries, and read from the bottom up. In later tradition each letter was named after a tree or plant. Here’s Ferdia, letter by letter.

᚛ᚃᚓᚏᚇᚔᚐ᚜
  1. FFearn, alder
  2. EEadhadh, aspen
  3. RRuis, elder
  4. DDair, oak
  5. IIodhadh, yew
  6. AAilm, pine

Write any name in Ogham with our Ogham translator

Names that go with Ferdia

Questions about Ferdia

How do you pronounce Ferdia?
Ferdia is pronounced FER-dee-a, with three syllables and the stress on the first.
What does Ferdia mean?
Ferdia is an Irish boy’s name of uncertain meaning, sometimes read as “man of smoke,” borne in legend by Cú Chulainn’s foster-brother.
Is Ferdia a girl's name or a boy's name?
Ferdia is a boy's name.
How popular is Ferdia in Ireland?
In 2025, Ferdia was No. 348 for boys in Ireland, with 11 babies, according to the Central Statistics Office. It was most popular in 1993, at No. 205.

Sources: popularity from the Central Statistics Office, table VSA50 (CC BY 4.0). Meaning and origin from Wikipedia, CELT, University College Cork, Ó Dónaill's Irish dictionary (teanglann.ie) and Behind the Name. How we research names: our sources. Spotted a mistake? support@babynamesofireland.com