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

Pacelli, 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 Pacelli surname is from the 2010 census data.

Popularity of Pacelli in America

Pacelli is the 22503rd most popular name in America based on the data we have collected from the U.S. Census Bureau.

The Pacelli surname appeared 1,143 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 Pacelli.

We can also compare 2010 data for Pacelli 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 Pacelli

The surname Pacelli is of Italian origin, with its roots traced back to the medieval period. It is believed to have originated in the region of Lazio, particularly in the area around Rome.

One of the earliest known references to the name Pacelli can be found in a manuscript from the 13th century, where it is recorded as "Pacellus". This suggests that the name may have derived from the Latin word "pacellus", meaning "small" or "little".

During the 14th and 15th centuries, the Pacelli family gained prominence in Rome, with several members holding important ecclesiastical positions. One notable figure was Cardinal Tommaso Pacelli, who lived from 1399 to 1472 and served as a diplomat for the Holy See.

In the 16th century, the Pacelli family established itself in the town of Calvi dell'Umbria, located in the province of Terni, Umbria. This town is believed to have been the ancestral home of the Pacelli family, and the name is closely associated with this region.

One of the most famous individuals to bear the surname Pacelli was Eugenio Pacelli, who later became Pope Pius XII. He was born in 1876 and served as the head of the Catholic Church from 1939 to 1958, during the tumultuous years of World War II.

Another notable figure was Francesco Pacelli, born in 1841, who served as a cardinal and was the younger brother of Pope Pius XII.

In the 19th century, the Pacelli family also had a presence in the United States, with several members immigrating to the country. One such individual was Vincenzo Pacelli, who was born in 1842 and settled in New York City, where he worked as a merchant.

The Pacelli surname has also been associated with the town of Paceco in Sicily, which may have derived its name from the Pacelli family or vice versa.

Throughout history, the Pacelli name has been spelled in various ways, including Pacellus, Pacellii, and Pacellus, reflecting the variations in spelling and pronunciation across different regions of Italy.

Race and ethnic origin of people with the last name Pacelli

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

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

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

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