OBrian family name history and map

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OBrian in 1911 Ireland

The 1911 Census recorded 76 people named OBrian in Ireland; roughly one in every 58,000 people carried the name. There were noticeably more men than women recorded: 43 men to 33 women.

Counties with OBrian in Ireland

Cork was OBrian country: 44.7% of them (34 people) lived there in 1911. Next came Donegal (11), Dublin (6), Down (5) and Antrim (4).
Surname distribution map, 1911 census

OBrian average age in 1911

The average OBrian in 1911 was 33.1 years old, 30.7 for men and 36.1 for women; noticeably older than the national averages of 29.6 for men and 30.5 for women. That low figure reflects just how many children there were in Edwardian Ireland, along with high infant mortality and the limits of public health at the time. For comparison, average life expectancy in Ireland today is around 83.

OBrian literacy in 1911

Of the OBrians whose literacy was recorded, 80.3% could both read and write, 2.8% could read but not write, and 16.9% could do neither. Women came out slightly ahead, 87.1% reading and writing against 75% of men. Bear in mind these figures include young children; the census itself only counted people aged nine and over when calculating illiteracy, on the grounds that it was unfair to label a child illiterate before they'd had a chance to learn.

OBrian common first names

The most common male names were John (7), Patrick, James, Kennedy and Michael. For women it was Annie (3), followed by Bridget, Bessie, Catherine and Margaret.

OBrian occupations in 1911

The most common entry on an OBrian's census form was "Scholar"; 14.5% (11) were children at school. Among the rest, the most common occupations were farm labourer (11.8%), farmer (7.9%), domestic servant (6.6%) and maid (5.3%). Grouped by sector, agriculture accounted for 22.4% of all OBrians, followed by domestic service, general labourers and no occupation / dependent.

What religion is OBrian?

OBrians were overwhelmingly Roman Catholic, 94.7% of them. The remainder were mostly Anglican (1.3%).

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Pete F
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OBrian statistics (1911)

Number: 76
Rank: 4,540
Average Age: 33

OBrianin the USA (2020)

Number: 2,949
Rank: 10,391

Note: If there were less than 100 in the USA census it will show as zero. 

Ref: obrian

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