Brennen family name history and map
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Brennen in 1911 Ireland
The 1911 Census recorded 103 people named Brennen in Ireland; roughly one in every 43,000 people carried the name. There were noticeably more women than men recorded: 59 women to 44 men.
Counties with Brennen in Ireland
Wexford had the largest share of Brennens, 23.3% (24 people). Next came Dublin (18), Tyrone (18), Galway (14) and Louth (5).

Brennen average age in 1911
The average Brennen in 1911 was 30.1 years old, 31.9 for men and 28.8 for women; almost exactly in line with 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.
Brennen literacy in 1911
Of the Brennens whose literacy was recorded, 85.3% could both read and write, 2.1% could read but not write, and 12.6% could do neither. The figures were much the same for men and women. 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.
Brennen common first names
The most common male names were James (8), John, Patrick, Thomas and Michael; the same five names that topped the list nationally. For women it was Mary (9), followed by Bridget, Ellen, Annie and Catherine.
Brennen occupations in 1911
The most common entry on a Brennen's census form was "Scholar"; 18.4% (19) were children at school. Among the rest, the most common occupations were farmer (6.8%), general labourer (6.8%), domestic servant (5.8%) and farm labourer (5.8%). Grouped by sector, agriculture accounted for 13.6% of all Brennens, followed by domestic service, general labourers and professional.
What religion is Brennen?
Brennens were predominantly Roman Catholic (85.4%). The remainder were mostly Anglican (11.7%) and Presbyterian (2.9%).
Visitor Notes
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Added by
Pete F
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Brennen statistics (1911)
Number: 103
Rank: 3,783
Average Age: 30
Brennen in the USA (2020)
Number: 1,152
Rank: 22,823
Note: If there were less than 100 in the USA census it will show as zero.
Ref: brennen
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