Holding steady.
Popularity of Ildefonso since 1917
Babies named Ildefonso per year in U.S. Social Security records.
Data table (by decade)
| Decade | Boys |
|---|---|
| 1910s | 6 |
| 1920s | 12 |
| 1930s | 6 |
| 1940s | 30 |
| 1950s | 24 |
| 1960s | 69 |
| 1970s | 67 |
| 1980s | 76 |
| 1990s | 58 |
| 2000s | 34 |
| 2010s | 5 |
| 2020s | 5 |
Meaning & origin
Ildefonso is an uncommon masculine name of Gothic origin, introduced to the Iberian Peninsula by the Visigoths. It peaked in the US in 1976, the most recent year with recorded births before a long gap; its trajectory has been stable but extremely low. Despite a first recorded year of 1917, the name has never appeared in the Social Security Administration's top 1000 rankings, with a one-in-N figure so high it rounds to zero. It remains a culturally resonant choice primarily within Spanish-speaking communities, though it has never gained broader traction in the United States.
Ildefonso comes from the Visigothic name *Hildifuns*, composed of 'hilds' (battle) and 'funs' (ready). It was Latinized as Ildefonsus and became common in medieval Spain, particularly in honor of Saint Ildefonso, a 7th-century bishop of Toledo. The name remained in use among Spanish-speaking populations, though never widespread in the United States.
Nicknames & variants
Nicknames: Ilde, Fonso, Poncho
Variants: Ildefonsus, Hildifuns
Sibling names for Ildefonso
Names that share Ildefonso's style, for a brother or sister.
