O' Leary Name Origin, Meaning and Family History

Discover how your O' Leary 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' Leary Surname Statistics


O' Leary Surname Variants Ranking

Rank Surname Match Census Frequency
1 O Brien 25% 4,889
2 O Neill 38% 2,288
3 O Connor 13% 2,195
4 O Neil 38% 2,053
5 O Donnell 11% 1,424
6 O Hara 50% 1,225
7 O Brian 25% 1,034
8 O Connell 11% 829
9 O' Brien 38% 734
10 O Hare 50% 666
11 O Leary 88% 566
12 O Neal 50% 407
13 O Niel 25% 386
14 O Conner 13% 382
15 O' Neill 50% 368
16 O Sullivan 20% 300
17 O Shea 38% 299
18 O Malley 25% 296
19 O Reilly 38% 286
20 O' Connor 33% 277
21 O Grady 50% 249
22 O' Hara 63% 249
23 O' Neil 50% 249
24 O Rourke 25% 228
25 O Bryan 25% 223
26 O Keefe 38% 214
27 O' Donnell 30% 206
28 O Toole 25% 180
29 O Donald 25% 163
30 O Keeffe 25% 150
31 O Donoghue 10% 140
32 O' Brian 38% 130
33 O Niell 25% 128
34 O' Connell 30% 128
35 O Callaghan 27% 123
36 O Dell 38% 115
37 O Boyle 25% 114
38 O Hanlon 13% 111
39 Owe 25% 105
40 O' Leary 100% 104
41 O Hagan 25% 100

Did you know?

The surname O' Leary is the 40th most popular variant of O Brien.

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