O Reilly Name Origin, Meaning and Family History

Discover how your O Reilly 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 Reilly Surname Statistics


Top Professions for the O Reilly family

Profession Census Frequency
Pauper Servant 1

O Reilly Surname Variants Ranking

Rank Surname Match Census Frequency
1 O Brien 38% 4,889
2 O Neill 75% 2,288
3 O Connor 25% 2,195
4 O Neil 63% 2,053
5 O Donnell 33% 1,424
6 O Hara 25% 1,225
7 O Brian 38% 1,034
8 O Connell 33% 829
9 O' Brien 25% 734
10 O Hare 25% 666
11 O Leary 50% 566
12 O Neal 50% 407
13 O Niel 50% 386
14 O Conner 25% 382
15 O' Neill 63% 368
16 O Sullivan 30% 300
17 O Shea 25% 299
18 O Malley 50% 296
19 O Reilly 100% 286
20 O' Connor 22% 277
21 O Grady 38% 249
22 O' Hara 13% 249
23 O' Neil 50% 249
24 O Rourke 38% 228
25 O Bryan 25% 223
26 O Keefe 38% 214
27 O' Donnell 30% 206
28 O Toole 38% 180
29 O Donald 38% 163
30 O Keeffe 38% 150
31 O Donoghue 20% 140
32 O' Brian 25% 130
33 O Niell 50% 128
34 O' Connell 30% 128
35 O Callaghan 27% 123
36 O Dell 63% 115
37 Morris 13% 114
38 O Boyle 38% 114
39 O Hanlon 38% 111
40 Owe 25% 105
41 O' Leary 38% 104
42 O Hagan 25% 100

Did you know?

The surname O Reilly is the 19th most popular variant of O Brien.

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