O'sullivan Name Origin, Meaning and Family History

Discover how your O'sullivan 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

England

Bedfordshire 0
Buckinghamshire 0
Berkshire 0
Cambridgeshire 0
Channel Islands 0
Cheshire 0
Cornwall 0
Cumberland 0
Derbyshire 0
Devon 0
Dorset 0
Durham 0
Essex 0
Gloucestershire 0
Hampshire 0
Herefordshire 0
Hertfordshire 0
Huntingdonshire 0
Isle of Man 0
Kent 0
Lancashire 3
Leicestershire 0
Lincolnshire 0
London 4
Middlesex 0
Northumberland 0
Norfolk 0
Northamptonshire 0
Nottinghamshire 0
Oxfordshire 0
Rutland 0
Shropshire 0
Suffolk 0
Somerset 0
Surrey 0
Sussex 0
Staffordshire 0
Warwickshire 0
Westmorland 0
Wiltshire 0
Worcestershire 0
Yorkshire 0

Wales

Anglesey 0
Brecknockshire 0
Cardiganshire 0
Carnarvonshire 0
Carmarthenshire 0
Denbighshire 0
Flintshire 0
Glamorgan 0
Merionethshire 0
Montgomeryshire 0
Monmouthshire 0
Pembrokeshire 0
Radnorshire 0

O'sullivan Surname Statistics


Top Professions for the O'sullivan family

Profession Census Frequency
Independant 1
Dyer 1

Most Frequent Forenames for O'sullivan

Name Census Frequency
Mary O'sullivan 68
John O'sullivan 64
Daniel O'sullivan 33
Michael O'sullivan 30
Patrick O'sullivan 29
Margaret O'sullivan 28
Ellen O'sullivan 25
William O'sullivan 23
Catherine O'sullivan 22
Timothy O'sullivan 19
James O'sullivan 18
Thomas O'sullivan 18
Joseph O'sullivan 17
Kathleen O'sullivan 15
Elizabeth O'sullivan 14
Eugene O'sullivan 14
Denis O'sullivan 13
Jane O'sullivan 13
Jeremiah O'sullivan 13
Alice O'sullivan 12
Cornelius O'sullivan 12
Annie O'sullivan 11
Nora O'sullivan 11
Eileen O'sullivan 10
Florence O'sullivan 10

O'sullivan Surname Variants Ranking

Rank Surname Match Census Frequency
1 O'sullivan 100% 950
2 Osullivan 90% 815

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The surname O'sullivan is the most popular version of all its varients

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