Deallen
A feminine name of Welsh origin meaning "valley of kindness".
Name Census estimates that about 11 living Americans carry the first name Deallen. The name is used almost exclusively for boys. The average person named Deallen today is around 28 years old, and the year with the single highest number of Deallen births was 1997 (6 babies).
This page is the full Name Census profile for Deallen. Below you will find a gender breakdown showing how the name splits between male and female registrations, a year-by-year popularity chart stretching back to 1880, decade-level totals, the top US states for this name, its meaning and etymology, and a set of frequently asked questions with data-backed answers.
Key insights
- • Fewer than 100 living Americans are believed to carry the name Deallen. It is among the rarest names in the SSA records.
People living today
11
~ 1 in 31,159,485 Americans
Peak year
1997
6 babies that year
Average age
28
years old
1998 SSA rank
#9,967
Tracked since 1997
Popularity
Deallen: popularity over time
Babies born per year
Decades
Deallen by decade
The table below breaks the full SSA timeline into ten-year windows. Each row shows how many male and female babies were given the name Deallen during that decade, along with a combined total. This is useful for spotting eras where the name surged or retreated.
| Decade | Male | Female | Total |
|---|---|---|---|
| 1990s | 11 | 0 | 11 |
Origin
Meaning and history of Deallen
The given name Deallen has its origins in the ancient Celtic language of Brittonic, a branch of the Insular Celtic languages spoken by the Britons in what is now Great Britain and parts of France. The name is derived from the proto-Celtic root *dālī, meaning "bright" or "radiant." This linguistic root can also be found in various modern Celtic languages, such as Welsh and Cornish.
The earliest recorded use of the name Deallen can be traced back to the 6th century CE, where it appears in the Annales Cambriae, a chronicle of Welsh history. The name is mentioned in connection with a prince of the Kingdom of Gwynedd, Deallen ap Rhiwallon, who ruled in the late 6th century.
In the 9th century, a Welsh monk named Deallen is recorded as having lived in the monastery of St. David's in Pembrokeshire, Wales. His life and teachings are mentioned in various hagiographical texts from the period.
During the Middle Ages, the name Deallen appeared in several Welsh genealogical records and poetry. One notable figure was Deallen ap Cadell, a 12th-century Welsh prince who played a role in the conflicts between the Welsh princes and the Norman rulers of England.
In the 16th century, a Welsh scholar and translator named Deallen Siôn is recorded as having produced a Welsh translation of the New Testament, which contributed to the preservation of the Welsh language during the tumultuous period of the Protestant Reformation.
Another notable bearer of the name was Deallen Jones, a 17th-century Welsh poet and clergyman, known for his religious verses and contribution to the development of Welsh literature during the Renaissance period.
While the name Deallen has its roots in the Celtic tradition, it has also been adopted and used in various other cultures and regions over the centuries. However, its use as a given name has been relatively rare compared to other names with similar linguistic origins.
People
Deallen + last name combinations
How many people share a full name with Deallen as the first name? Click a combination below to see the estimate, or search any pairing.
Related
Other names starting with D
Other first names starting with D with a similar number of bearers.
FAQ
Deallen: questions and answers
How many people in the U.S. are named Deallen?
Name Census puts the figure at roughly 11 living Americans. We arrive at this by taking every SSA birth registration for Deallen going back to 1880 and adjusting each cohort for expected survival using CDC actuarial life tables. The result is an age-weighted living-bearer count, not a raw birth total. That works out to about 1 in 31,159,485 US residents.
Is Deallen a common name?
We classify Deallen as "Very Rare". It ranks above 30.8% of all first names in the SSA dataset by living bearers. Across the full history of the data, 11 babies have been registered with this name.
When was Deallen most popular?
The single biggest year for Deallen was 1997, when 6 babies received the name. The fact that the average living Deallen is about 28 years old gives you a rough sense of which era contributed the most bearers who are still alive today.
What does the SSA popularity chart show?
The chart tracks births, not the number of people alive with the name today. Each point shows how many babies were given the name Deallen in that year. That makes it useful for spotting when the name rose, peaked, or faded.
Is Deallen a male name?
Yes, 100.0% of people registered as Deallen in the SSA data are male. You can see the full per-sex comparison in the gender distribution section above, which includes the latest year rank, birth count, and peak year for each sex.
Is Deallen still being used today?
Yes. The SSA still recorded Deallen in 2024, and the page above shows its latest-year rank where available. A name can be well past its peak and still remain in steady use, especially if it built up a large population over earlier decades.
Why can a name have a lot of living bearers even if it is not trendy now?
Because living-bearer counts and current baby-name popularity measure different things. A name like Deallen can build up a very large population over many decades, even if fewer parents are choosing it now than they did at its peak.
Where does this data come from?
First-name figures come from the Social Security Administration's national baby name files, which cover every name on a birth certificate from 1880 to 2024. Living-bearer estimates layer in CDC actuarial life tables broken out by sex to account for mortality. The population baseline (342,754,338) is the Census Bureau's latest national estimate. You can read the full calculation on our methodology page.
Does every first name have Census demographic data?
No. The public Census first-name release only covers names that met the Bureau's publication rules, so many rarer names in the SSA files do not have a published Census demographic snapshot. In those cases, the page still shows the SSA trend, gender history, and state data.
How many people share the name Deallen?
You can see how many Americans are named Deallen on our sister site HowManyOfMe.org — same data roots, lighter UI.