| Rex | Aurelio | |
|---|---|---|
| Meaning | king | golden |
| Origin | latin | latin |
| Gender | Boy | Boy |
| Pronunciation | reks | ow-REH-lee-oh |
| Syllables | 1 | 4 |
| First appeared | 1880 | 0 |
| Peak year | 1951 (1,503) | 2025 (399) |
| In 2025 | 281 | 0 |
| Trend | Steady | Rising |
Source: US Social Security Administration.
| Decade | Rex | Aurelio |
|---|---|---|
| 2020s | 2,106 | 1,561 |
| 2010s | 3,945 | 967 |
| 2000s | 2,048 | 821 |
| 1990s | 1,740 | 886 |
| 1980s | 2,532 | 765 |
| 1970s | 3,359 | 767 |
| 1960s | 8,735 | 523 |
| 1950s | 13,499 | 512 |
| 1940s | 6,671 | 414 |
| 1930s | 5,949 | 546 |
| 1920s | 5,627 | 573 |
| 1910s | 3,253 | 283 |
| 1900s | 497 | 16 |
| 1890s | 305 | 0 |
| 1880s | 183 | 0 |
Directly from the Latin noun 'rex', meaning 'king' — the same root behind 'regal' and 'royal'. One of the few names that literally means 'king' with no ambiguity.
Italian and Spanish form of Aurelius, from Latin 'aureus' ('golden') and 'aurum' (gold). Literal gold sense, not golden-haired.
Rex is more popular than Aurelio today: about 281 US babies were given the name Rex in 2025, compared with 0 named Aurelio.
Rex means king (latin origin), while Aurelio means golden (latin origin).
In US records, Rex first appears in 1880 and Aurelio in 0, so Aurelio has the longer recorded history.