What does Eirian mean?
Eirian means “bright” or “beautiful” in Welsh.
What does Iestyn mean?
Iestyn is the Welsh form of Justin, “just” or “fair.”
Eirian vs Iestyn
Which is more popular?
Eirian is more popular than Iestyn today: about 7 US babies were given the name Eirian in 2025, compared with 0 named Iestyn.
| Eirian | Iestyn | |
|---|---|---|
| Meaning | Bright, beautiful | Just, fair |
| Origin | Welsh | Welsh |
| Gender | Boy | Boy |
| Pronunciation | AY-ree-an | YES-tin |
| Syllables | 3 | 2 |
| First appeared | 2024 | 2010 |
| Peak year | 2024 (14) | 2010 (5) |
| In 2025 | 7 | 0 |
| Trend | Steady | Declining |
Popularity over time, 1880–2025
Eirian
Iestyn
Source: US Social Security Administration.
Births by decade
| Decade | Eirian | Iestyn |
|---|---|---|
| 2020s | 21 | 0 |
| 2010s | 0 | 5 |
Frequently asked questions
Is Eirian or Iestyn more popular?
Eirian is more popular than Iestyn today: about 7 US babies were given the name Eirian in 2025, compared with 0 named Iestyn.
What is the difference between Eirian and Iestyn?
Eirian means Bright, beautiful (Welsh origin), while Iestyn means Just, fair (Welsh origin).
Which name is older, Eirian or Iestyn?
In US records, Eirian first appears in 2024 and Iestyn in 2010, so Iestyn has the longer recorded history.