Find out how popular the last name Ildefonso is in the United States and learn more about the meaning, history, and race and ethnic origin of people in America who are named Ildefonso.

Ildefonso, like all of the last names we have data for, is identified by the U.S. Census Bureau as a surname which has more than 100 occurrences in the United States in the Decennial Census survey. The most recent statistics we have for the Ildefonso surname is from the 2010 census data.

Popularity of Ildefonso in America

Ildefonso is the 35812th most popular name in America based on the data we have collected from the U.S. Census Bureau.

The Ildefonso surname appeared 627 times in the 2010 census and if you were to sample 100,000 people in the United States, approximately 0 people would have the surname Ildefonso.

We can also compare 2010 data for Ildefonso to data from the previous census in 2000. The table below contains all of the statistics for both years in a side-by-side comparison.

The history of the last name Ildefonso

The surname ILDEFONSO has its origins in the Iberian Peninsula, specifically in the regions of Spain and Portugal. It is derived from the Germanic name Ildefonso, which is a compound of the elements "ild" meaning "battle" and "funs" meaning "ready" or "prepared." This suggests that the name may have been given to someone who was considered a skilled or courageous warrior.

ILDEFONSO can trace its roots back to the early Middle Ages, when it was borne by several notable historical figures. One of the earliest recorded instances of the name was Ildefonso, who was the Archbishop of Toledo from 657 to 667 AD. He is venerated as a saint in the Catholic Church and is known for his writings on the perpetual virginity of the Virgin Mary.

Another prominent bearer of the name was Ildefonso, Count of Catalonia, who lived in the 9th century AD. He was a powerful nobleman and played a significant role in the political affairs of the Carolingian Empire during the reign of Charlemagne.

In the 11th century, the ILDEFONSO surname appeared in the Domesday Book, a comprehensive record of landowners and property holdings commissioned by William the Conqueror in 1086. This suggests that individuals bearing this name had established themselves in England by that time.

One notable example from the medieval period is Ildefonso de la Cerda y Meneses, a Spanish nobleman who lived from 1275 to 1333. He was a prominent military leader and served as the Lord of Gibraleón and Huelva.

During the Renaissance, the ILDEFONSO surname continued to be borne by individuals of significance. For instance, Ildefonso de Toledo y Monroy (1485-1567) was a Spanish theologian and scholar who played a crucial role in the Council of Trent, a pivotal event in the Catholic Reformation.

In the 17th century, Ildefonso Falcones de Toledo (1598-1667) was a Spanish military officer and diplomat who served as the Governor of the Philippines from 1662 to 1663.

While the surname ILDEFONSO has its roots in the Iberian Peninsula, it has since spread to other parts of the world through migration and cultural exchange. The rich history and significance of this name continue to be celebrated and preserved in various communities.

Race and ethnic origin of people with the last name Ildefonso

We also have some data on the ancestry of people with the surname Ildefonso.

The below race categories are the modified race categories used in the Census Bureau's population estimates program. All people were categorized into six mutually exclusive racial and Hispanic origin groups:

1. White only
2. Black only
3. American Indian and Alaskan Native only
4. Asian and Pacific Islander only
5. Hispanic
6. Two or More Races

For the most recent 2010 census data, the race/ethnic origin breakdown for Ildefonso was:

Note: Any fields showing (S) means the data was suppressed for privacy so that the data does not in any way identify any specific individuals.

Since we have data from the previous census in 2000, we can also compare the values to see how the popularity of Ildefonso has changed in the 10 years between the two census surveys.

Data source

The last name data and ethnic breakdown of last names is sourced directly from the Decennial Census survey, conducted every 10 years by the United States Census Bureau.

The history and meaning of the name Ildefonso was researched and written by our team of onomatology and genealogy experts.

If you have a correction or suggestion to improve the history of Ildefonso, please contact us.

Reference this page

We spend a lot of resources downloading, cleaning, merging, and formatting the data that is shown on the site.

If you found the data or information on this page useful in your research, please use the tool below to properly cite or reference Name Census as the source. We appreciate your support!