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Surnames by county · Connacht

Most common surnames in County Roscommon

Kelly was the commonest surname in Co. Roscommon in 1911: 2,708 people, about one resident in 35. It was followed by Beirne, McDermott, O'Connor and Flynn.

Counts are people living in the county on census night, with spelling variants combined (Sullivan and O'Sullivan count as one name).

Donegal Waterford Dublin Kilkenny Carlow Limerick Louth Tipperary Roscommon Meath Wicklow Cavan Cork Clare Galway Mayo Sligo Leitrim Offaly Laois Kildare Kerry Monaghan Wexford Longford Westmeath Tyrone Antrim Armagh Fermanagh Londonderry Down

The 25 commonest names, 1911

#SurnamePeoplePer 10,00019011926
1 Kelly 2,708 288 1 1
2 Beirne 1,477 157 2 2
3 McDermott 1,294 138 3 3
4 O'Connor 1,038 111 6 5
5 Flynn 1,030 110 7 6
6 Murray 1,002 107 12 4
7 Flanagan 977 104 5 8
8 O'Regan 965 103 8 7
9 Brennan 922 98 4 9
10 Fallon 860 92 10 11
11 Kenny 846 90 9 10
12 Moran 814 87 11 12
13 Egan 795 85 13 14
14 Farrell 686 73 15 13
15 Higgins 647 69 16 16
16 Dolan 633 67 14 15
17 Duffy 587 63 17 17
18 Towey 539 57 20 21
19 Quinn 511 54 18 20
20 McLaughlin 507 54 19 19
21 McDonnell 474 50 21 29
22 Burke 453 48 23 18
23 Casey 453 48 25 26
24 Cox 451 48 29 28
25 Healy 437 47 28 33

The 1901 and 1926 columns give the name's rank in the county in that year; a dash means it was outside the top 40. Linked names have a full page with meaning, Irish forms and history.

Names most typical of Roscommon

Among the 100 commonest Irish surnames, these were the most over-represented in Co. Roscommon in 1911, compared with their share of Ireland's population as a whole.

  1. McDermott 8.3× 1,294 people · 138 per 10,000
  2. Flanagan 6.14× 977 people · 104 per 10,000
  3. O'Regan 6.03× 965 people · 103 per 10,000
  4. Kenny 4.25× 846 people · 90 per 10,000
  5. Higgins 3.92× 647 people · 69 per 10,000
  6. Moran 3.58× 814 people · 87 per 10,000
  7. Flynn 3.42× 1,030 people · 110 per 10,000
  8. Brennan 2.94× 922 people · 98 per 10,000
  9. Kelly 2.72× 2,708 people · 288 per 10,000
  10. Murray 2.59× 1,002 people · 107 per 10,000

Questions about surnames in Roscommon

What is the most common surname in County Roscommon?

In the 1911 census the most common surname in Co. Roscommon was Kelly, with 2,708 people, or about one resident in 35. The next most common were Beirne, McDermott, O'Connor and Flynn. Kelly was still the commonest name in 1926.

Which surnames are most typical of County Roscommon?

Compared with Ireland as a whole, the names most over-represented in Co. Roscommon in 1911 (among the 100 commonest Irish surnames) were McDermott (8.3× the national rate), Flanagan (6.14× the national rate), O'Regan (6.03× the national rate).

Ancestors from County Roscommon?

Browse every townland and household in Co. Roscommon in the 1901, 1911 and 1926 censuses.

Roscommon records on irishcensus.com