O Callaghan Name Origin, Meaning and Family History

Discover how your O Callaghan ancestors earned their living and spread across the country. Find out more about your family history by using the Free Search box.

Surname Distribution

Census frequency by county

Name Concentrations Within England and Wales

O Callaghan Surname Statistics


Top Professions for the O Callaghan family

Profession Census Frequency
Hawker 1

O Callaghan Surname Variants Ranking

Rank Surname Match Census Frequency
1 O Brien 27% 4,889
2 O Neill 27% 2,288
3 O Connor 27% 2,195
4 O Neil 27% 2,053
5 O Donnell 18% 1,424
6 O Hara 36% 1,225
7 O Brian 36% 1,034
8 O Connell 27% 829
9 O' Brien 18% 734
10 O Hare 27% 666
11 O Leary 36% 566
12 O Neal 27% 407
13 O Niel 27% 386
14 O Conner 27% 382
15 O' Neill 18% 368
16 O Sullivan 55% 300
17 O Shea 27% 299
18 O Malley 45% 296
19 O Reilly 27% 286
20 O' Connor 18% 277
21 O Grady 27% 249
22 O' Hara 27% 249
23 O' Neil 18% 249
24 O Rourke 18% 228
25 O Bryan 36% 223
26 O Keefe 18% 214
27 O' Donnell 9% 206
28 O Toole 27% 180
29 O Donald 27% 163
30 O Keeffe 18% 150
31 O Donoghue 36% 140
32 O' Brian 27% 130
33 O Niell 27% 128
34 O' Connell 18% 128
35 O Callaghan 100% 123
36 O Dell 36% 115
37 Morris 9% 114
38 O Boyle 27% 114
39 O Hanlon 45% 111
40 Owe 9% 105
41 O' Leary 27% 104
42 O Hagan 55% 100

Did you know?

The surname O Callaghan is the 35th most popular variant of O Brien.

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