| Liam | Nolan | |
|---|---|---|
| Meaning | Resolute protector | Champion |
| Origin | Irish | Irish |
| Gender | Boy | Boy |
| Pronunciation | LEE-am | NOH-lun |
| Syllables | 2 | 2 |
| First appeared | 1947 | 1881 |
| Peak year | 2024 (22,252) | 2015 (5,739) |
| In 2025 | 20,818 | 4,846 |
| Trend | Near its peak | Rising |
Source: US Social Security Administration.
| Decade | Liam | Nolan |
|---|---|---|
| 2020s | 124,842 | 30,357 |
| 2010s | 174,017 | 50,045 |
| 2000s | 44,940 | 26,374 |
| 1990s | 11,904 | 11,791 |
| 1980s | 1,527 | 4,678 |
| 1970s | 784 | 2,006 |
| 1960s | 400 | 1,494 |
| 1950s | 117 | 1,960 |
| 1940s | 5 | 2,003 |
| 1930s | 0 | 1,822 |
| 1920s | 0 | 1,674 |
| 1910s | 0 | 1,021 |
| 1900s | 0 | 174 |
| 1890s | 0 | 75 |
| 1880s | 0 | 31 |
Liam is an Irish short form of William, itself from the Germanic Wilhelm — wil (will, desire) plus helm (helmet, protection) — giving the sense “resolute protector” or “strong-willed guardian.”
Nolan comes from the Irish Ó Nualláin, linked to “champion” or “noble.”
Liam is more popular than Nolan today: about 20,818 US babies were given the name Liam in 2025, compared with 4,846 named Nolan.
Liam means Resolute protector (Irish origin), while Nolan means Champion (Irish origin).
In US records, Liam first appears in 1947 and Nolan in 1881, so Nolan has the longer recorded history.