Explore the Family Name Glennon
The meaning of Glennon
1. Irish: shortened Anglicized form of Gaelic Mag Leannáin ‘son of Leannán’, a byname from leann ‘cloak’. 2. Scottish: shortened Anglicized form of Gaelic Mac Gille Fhinnein, see McLennan. Some characteristic forenames: Irish Aileen, Brendan, Liam.
Dictionary of American Family Names, 2nd edition, © Oxford University Press, 2022.
How common is the last name Glennon in the United States?
Based on the Decennial U.S. Census, the surname Glennon has seen a slight decrease in popularity between 2000 and 2010. The name dropped in rank from 8676 to 9165, marking a 5.64% decrease. However, the count of individuals bearing this surname actually saw a small increase of 2.06%, rising from 3489 to 3561 over the ten-year period. This indicates that while there are more people with the name Glennon, other surnames have grown in frequency at a faster rate, causing Glennon's ranking to slip.
| 2000 | 2010 | Change | |
|---|---|---|---|
| Rank | #8,676 | #9,165 | -5.64% |
| Count | 3,489 | 3,561 | 2.06% |
| Proportion per 100k | 1.29 | 1.21 | -6.2% |
Race and Ethnicity of people with the last name Glennon
The ethnicity breakdown for those bearing the surname Glennon has also seen some changes between 2000 and 2010, according to the Decennial U.S. Census. While the majority of Glennons identify as White, there was a slight decrease of 1.70% in this group over the decade. The percentage of Glennons identifying as Hispanic saw a notable increase of 60.22%, albeit from a relatively small base. The Asian/Pacific Islander and American Indian and Alaskan Native categories both saw new entries in 2010, with 0.62% and 0.14% respectively. The proportion of Glennons identifying as Black or from two or more races also saw modest increases during this period.
| 2000 | 2010 | Change | |
|---|---|---|---|
| White | 96.39% | 94.75% | -1.7% |
| Hispanic | 1.86% | 2.98% | 60.22% |
| Two or More Races | 0.77% | 0.84% | 9.09% |
| Black | 0.52% | 0.67% | 28.85% |
| Asian/Pacific Islander | 0% | 0.62% | 0% |
| American Indian and Alaskan Native | 0% | 0.14% | 0% |
Glennon ancestry composition
23andMe computes an ancestry breakdown for each customer. People may have ancestry from just one population or they may have ancestry from several populations. The most commonly-observed ancestry found in people with the surname Glennon is British & Irish, which comprises 63.7% of all ancestry found in people with the surname. The next two most common ancestries are French & German (13.3%) and Italian (6.5%). Additional ancestries include Eastern European, Spanish & Portuguese, Scandinavian, Ashkenazi Jewish, and Indigenous American.
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| ANCESTRY BREAKDOWN | COMPOSITION |
|---|---|
| British & Irish | 63.7% |
| French & German | 13.3% |
| Italian | 6.5% |
| Other | 16.5% |
Possible origins of the surname Glennon
Your DNA provides clues about where your recent ancestors may have lived. Having many distant relatives in the same location suggests that you may all share common ancestry there. Locations with many distant relatives can also be places where people have migrated recently, such as large cities. If a large number of individuals who share your surname have distant relatives in a specific area, it could indicate a connection between your surname and that location, stemming from either recent ancestral ties or migration.
Based on 23andMe data, people with last name Glennon have recent ancestry locations in the United Kingdom of Great Britain and Northern Ireland and Ireland.
| RECENT ANCESTRY Location | Percentage |
|---|---|
| West Midlands, United Kingdom | 88.10% |
| Merseyside, United Kingdom | 88.10% |
| Greater Manchester, United Kingdom | 88.10% |
| Greater London, United Kingdom | 88.10% |
| Tyne And Wear, United Kingdom | 88.10% |
What Glennon haplogroups can tell you
Haplogroups are genetic population groups that share a common ancestor on either your paternal or maternal line. These paternal and maternal haplogroups shed light on your genetic ancestry and help tell the story of your family.
The top paternal haplogroup of people with the surname Glennon is R-CTS241, which is predominantly found among people with European ancestry. Haplogroup R-CTS241 is descended from haplogroup R-M343. Other common haplogroups include R-A154 and R-L21, which are predominantly found among people with European and European ancestry. Other surnames with similar common haplogroups are: Maxwell, Olin, Clay, Mccabe, Harriman, Trimble, Mcnulty, Phelan, Fitzpatrick, Whitney.
The most common maternal haplogroups of people with Glennon surname are: T2b, J1c, H. These most commonly trace back to individuals of European ancestry.
Paternal Haplogroup Origins R-M343Your maternal lineage may be linked to Marie Antoinette
Because it is so dominant in the general European population, haplogroup H also appears quite frequently in the continent's royal houses. Marie Antoinette, an Austrian Hapsburg who married into the French royal family, inherited the haplogroup from her maternal ancestors. So did Prince Philip, Duke of Edinburgh, whose recorded genealogy traces his female line to Bavaria. Scientists also discovered that famed 16th century astronomer Nicolaus Copernicus traced his maternal lineages to haplogroup H.
What do people with the surname Glennon have in common?
Spoiler alert: it's complicated. People with the same last name are usually no more genetically similar than a randomly sampled group of people from the same population. That said, people with the same surname are more likely to have similar ancestries than randomly sampled individuals. The reason is the tendency of people with similar cultural or geographical backgrounds to preferentially mate with one another. That's why people who share a surname may be more likely to share traits and tendencies in common than people within the general population. Check out the percentages below to see the prevalences of tastes, habits, and traits of people with your surname compared with prevalences among 23andMe users.
Preferences
Chocolate Ice Cream
Prefers chocolate flavored ice cream over other flavors.
"Glennon" Surname 40.0%
23andMe Users 41.3%
Traits
Cheek Dimples
Small indentations that appear on the cheeks when a person smiles.
"Glennon" Surname 33.3%
23andMe Users 37.6%
Habits
Vitamin Use
Takes vitamins on a regular basis.
"Glennon" Surname 38.9%
23andMe Users 45.5%
Wellness
Migraine
A severe headache characterized by intense pain, sensitivity to light and sound, and often accompanied by nausea and vomiting.
"Glennon" Surname 17.9%
23andMe Users 16.4%
Are health conditions linked to the last name Glennon?
The short answer is that, if there is an association between surname and health, it's usually more about your ancestry than your name. Individuals with a given surname are no more genetically similar than the general population but often have similar ancestries. The populations of people associated with those shared ancestries often have sets of genetic variations, also known as alleles, in common. Some of those alleles are associated with a greater likelihood of developing certain diseases.
Disease variant frequency by ancestry
Disease allele frequencies in populations associated with the surname Glennon are shown below. Important Note: not everyone with a disease allele will develop these health condition