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

Guglielmo, 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 Guglielmo surname is from the 2010 census data.

Popularity of Guglielmo in America

Guglielmo is the 14382nd most popular name in America based on the data we have collected from the U.S. Census Bureau.

The Guglielmo surname appeared 2,078 times in the 2010 census and if you were to sample 100,000 people in the United States, approximately 1 people would have the surname Guglielmo.

We can also compare 2010 data for Guglielmo 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 Guglielmo

The surname Guglielmo originated in Italy during the medieval period. It is derived from the Italian form of the Germanic name Wilhelm, which means "resolute protector." The name was particularly prevalent in the regions of Tuscany and Umbria.

One of the earliest recorded instances of the surname Guglielmo can be found in the Codice Diplomatico Longobardo, a collection of historical documents from the Lombard period in Italy, dating back to the 8th century. The name appears in various forms, such as Guglielmi, Guglielmus, and Guglielmino.

In the 13th century, a notable figure bearing the name Guglielmo was Guglielmo da Piacenza, a renowned jurist and legal scholar who contributed significantly to the development of canon law. He lived from around 1210 to 1271.

Another historical figure with the surname Guglielmo was Guglielmo Marcillat, a French soldier and diplomat who served as the ambassador of King Charles VIII to the Ottoman Empire in the late 15th century. He played a crucial role in negotiating the Treaty of Tours in 1497.

During the Renaissance period, Guglielmo della Porta, an Italian sculptor and architect, left his mark on the city of Rome. He was born in 1515 and passed away in 1577. His works included the famous Palazzo dei Conservatori and the Palazzo dei Governatori in the Piazza del Campidoglio.

In the realm of literature, Guglielmo Ferrero, an Italian historian and novelist, gained recognition for his works, including "Greatness and Decline of Rome" and "The Reconstruction of Ancient Thought." He was born in 1871 and died in 1942.

Another noteworthy figure was Guglielmo Marconi, the Italian inventor and electrical engineer who pioneered the development of long-distance radio transmission. He was awarded the Nobel Prize in Physics in 1909 for his groundbreaking contributions. Marconi was born in 1874 and passed away in 1937.

Race and ethnic origin of people with the last name Guglielmo

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

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 Guglielmo 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 Guglielmo 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 Guglielmo was researched and written by our team of onomatology and genealogy experts.

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

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