UK surname
An Anglicized form of the Irish surname "Ó Ceallacháin," meaning "descendant of Ceallachán" (a personal name meaning "bright-headed").
In the 1881 census there were 38 people recorded with the Calahan surname, ranking it #28,285 among surnames in the records. By 2016, the modern count was 14, ranked #37,178, down from #28,285 in 1881.
The strongest historical links point to St George in the East, St Mary Whitechapel and St Olave Southwark. In the modern distribution records, the strongest local clusters include No data.
Across the surname records, the highest recorded count for Calahan is 112 in 1861. Compared with 1881, the name has fallen by 63.2%.
1881 census count
38
Ranked #28,285
Modern count
14
2016, ranked #37,178
Peak year
1861
112 bearers
Map years
2
1851 to 1861
Key insights
Map
Back to topThe map shows where the Calahan surname is concentrated in each census or modern distribution year. Darker areas mean a stronger local concentration.
Distribution map
Calahan surname density by area, 1861 census.
Timeline
Back to topThe table below tracks recorded surname counts and rank from the 19th-century census years through the modern adult-register period.
| Year | Period | Count | Rank |
|---|---|---|---|
| 1851 | historical | 107 | #16,402 |
| 1861 | historical | 112 | #19,279 |
| 1881 | historical | 38 | #28,285 |
| 1891 | historical | 17 | #32,787 |
| 1901 | historical | 5 | #33,728 |
| 1911 | historical | 6 | #33,255 |
| 1997 | modern | 5 | #37,891 |
| 1998 | modern | 5 | #37,861 |
| 1999 | modern | 5 | #37,872 |
| 2000 | modern | 5 | #37,823 |
| 2001 | modern | 3 | #38,091 |
| 2002 | modern | 4 | #37,921 |
| 2003 | modern | 7 | #37,397 |
| 2004 | modern | 5 | #37,830 |
| 2005 | modern | 5 | #37,885 |
| 2006 | modern | 7 | #37,634 |
| 2007 | modern | 6 | #37,837 |
| 2008 | modern | 7 | #37,735 |
| 2009 | modern | 11 | #37,336 |
| 2010 | modern | 10 | #37,517 |
| 2011 | modern | 11 | #37,397 |
| 2012 | modern | 8 | #37,740 |
| 2013 | modern | 9 | #37,653 |
| 2014 | modern | 13 | #37,256 |
| 2015 | modern | 12 | #37,371 |
| 2016 | modern | 14 | #37,178 |
Geography
Back to topHistorical parish links are strongest around St George in the East, St Mary Whitechapel, St Olave Southwark, Manchester and St Thomas Southwark. These are the places where the surname stands out most clearly in the older records.
The modern local-area list points to No data. Treat these as concentration signals, not proof that every family line began there.
| Rank | Parish | Area |
|---|---|---|
| 1 | St George in the East | London (East Districts) |
| 2 | St Mary Whitechapel | London (East Districts) |
| 3 | St Olave Southwark | London (South Districts) |
| 4 | Manchester | Lancashire |
| 5 | St Thomas Southwark | London (South Districts) |
| Rank | Area | District |
|---|---|---|
| 1 | No data | No data |
Forenames
Back to topThese lists show first names that appear often with the Calahan surname in historical and recent records.
Recent female names
Recent male names
Modern profile
Back to topModern surname records can be compared with neighbourhood classifications. For Calahan, this points to the kinds of places where the surname is most concentrated today.
These neighbourhood labels describe areas, not individual people. They are useful because surnames often cluster through family history, migration, housing patterns and local work. A surname can be strongest in one type of neighbourhood even when people with that name live across the country.
The UK classification gives the national picture. The London classification is more specific to the capital, where housing, age profile, tenure and population mix can look quite different from the rest of the UK.
UK neighbourhood type
Supergroup
No data
Group
No data
Nationally, the Calahan surname is most associated with neighbourhoods classed as No data, within No data. This does not mean every Calahan household fits that profile, but it gives a useful signal about where the modern surname distribution is strongest.
London neighbourhood type
Supergroup
No data
Group
No data
Within London, Calahan is most associated with areas classed as No data, part of No data. This gives the surname a London-specific profile rather than forcing the capital into the same pattern as the rest of the country.
Broadband speed
The modern neighbourhood pattern for Calahan is most associated with a typical fixed broadband download band of No data.
Area snapshot
This describes the area pattern most associated with Calahan, not the ethnicity of every person with the surname.
Origin
Back to topThe surname Calahan has its origins in the Gaelic language and is believed to have emerged in Ireland during the medieval period. It is thought to be derived from the Irish words "calath" and "an," which collectively translate to "the battle" or "the strife." This suggests that the name may have been initially bestowed upon an individual or family with a reputation for being formidable warriors or embroiled in conflicts.
Historically, the name Calahan was most prevalent in the counties of Donegal, Galway, and Mayo in Ireland. Some of the earliest recorded instances of the name can be found in ancient Irish manuscripts and chronicles dating back to the 12th century, where it appears with various spelling variations such as Callaghan, Callaghen, and Callachan.
One notable historical figure bearing the Calahan surname was Dermot Calahan, a chieftain from Donegal who fought alongside the Irish forces during the Nine Years' War (1594-1603) against English rule. Another prominent individual was Rory Calahan, born in 1688, who was a renowned Irish scholar and poet renowned for his contributions to preserving the Gaelic language and culture.
In the annals of Irish history, the name Calahan is also associated with several place names, such as Calahan's Castle in County Mayo, which was once the stronghold of a powerful Calahan clan in the region. Additionally, the town of Calahan's Cross in County Galway is believed to have been named after a prominent Calahan family who resided there in the 16th century.
During the mass emigration of Irish people to the United States and other parts of the world in the 19th century, many individuals bearing the Calahan surname left their homeland in search of better opportunities. Among the notable Calahans of this era was Michael Calahan, born in 1822, who became a successful businessman and philanthropist in New York City.
Another individual of historical significance was Margaret Calahan (1848-1924), a pioneering educator who established several schools in the American West and played a pivotal role in promoting education for Native American children. Similarly, John Calahan (1861-1932), a railway engineer, was instrumental in the construction of several major railroad lines across the United States, contributing significantly to the nation's infrastructure development.
Sourced from namecensus.com.
1881 census detail
Back to topThese tables use 1881 census entries for people recorded with the Calahan surname. Use the location tables for concentration, then the name and occupation tables for the people behind the surname.
Total is the county count. Frequency and index adjust for local population size, so they are better concentration signals. Middlesex leads with 22 Calahans recorded in 1881 and an index of 5.94x.
| County | Total | Index |
|---|---|---|
| Middlesex | 22 | 5.94x |
| Surrey | 4 | 2.22x |
| Kent | 3 | 2.37x |
| Lanarkshire | 2 | 1.67x |
| Lancashire | 2 | 0.46x |
| Glamorgan | 1 | 1.55x |
| Gloucestershire | 1 | 1.38x |
| Hampshire | 1 | 1.32x |
| Northumberland | 1 | 1.81x |
| Staffordshire | 1 | 0.80x |
Districts give a more local view than counties. Total shows raw records, while frequency and index show local concentration. St George In East London in Middlesex leads with 8 Calahans recorded in 1881 and an index of 229.89x.
| Place | Total | Index |
|---|---|---|
| St George In East London | 8 | 229.89x |
| Fulham London | 4 | 74.49x |
| St Marylebone London | 4 | 20.22x |
| Westminster St John | 4 | 88.69x |
| Camberwell | 2 | 8.45x |
| Deptford St Nicholas | 2 | 200.00x |
| Newington | 2 | 14.62x |
| Barony | 1 | 3.30x |
| Cardiff St John | 1 | 47.39x |
| Chelsea London | 1 | 8.96x |
| Cheltenham | 1 | 17.83x |
| Heston | 1 | 81.30x |
| Hound | 1 | 192.31x |
| Minster In Sheppey | 1 | 47.85x |
| New Monkland | 1 | 28.25x |
| Newchurch | 1 | 27.78x |
| Newton In Makerfield | 1 | 74.07x |
| Stone | 1 | 62.50x |
| Wallsend | 1 | 57.14x |
These are the female first names most often recorded with the Calahan surname in 1881. Names are not merged, so initials, variant spellings and transcription quirks can appear as separate rows.
These are the male first names most often recorded with the Calahan surname in 1881. Names are not merged, so initials, variant spellings and transcription quirks can appear as separate rows.
Occupational titles are kept as recorded and later transcribed, so related jobs, spelling variants and mistakes stay separate. Scholar was the census term for a child in education. That means the other rows often tell you more about adult work in Calahan households.
| Occupation | Count |
|---|---|
| Scholar | 5 |
| At Glue Works | 2 |
| Servant | 2 |
| Ag Lab | 1 |
| Bricklayers Labourer | 1 |
| Cotton Operative | 1 |
| Dressmaker | 1 |
| Factory Labourer | 1 |
| General Labourer | 1 |
| Housemaid Domestic | 1 |
| Laborer In Soap Works | 1 |
| Labourer (At Sugar Works) | 1 |
| Mason | 1 |
| Pavior | 1 |
| Sc(h)olar | 1 |
| Shop Keeper (Gen) | 1 |
| Soldier | 1 |
| Trouser Maker (Tailoress) | 1 |
| Waistcoat Maker | 1 |
FAQ
In 1881, 38 people were recorded with the Calahan surname. That placed it at #28,285 in the surname rankings for that year.
The latest modern count shown here is 14 in 2016. That gives Calahan a modern rank of #37,178.
An Anglicized form of the Irish surname "Ó Ceallacháin," meaning "descendant of Ceallachán" (a personal name meaning "bright-headed").
The map shows local surname concentration for the selected year. Darker areas have a stronger concentration of Calahan bearers relative to the surrounding population.
The historical counts come from census surname records. The modern counts and neighbourhood summaries come from later surname distribution records. Counts are recorded bearers in those records, not a live estimate of everyone with the name today.