Gahan family name history and map
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Gahan in 1911 Ireland
The 1911 Census recorded 620 people named Gahan in Ireland; roughly one in every 7,100 people carried the name. The name was split fairly evenly between men and women: 315 men and 305 women.
Counties with Gahan in Ireland
Dublin had the largest share of Gahans, 24.5% (152 people). Next came Wexford (119), Carlow (113), Wicklow (73) and Kilkenny (59).

Gahan average age in 1911
The average Gahan in 1911 was 29.1 years old, 28.7 for men and 29.5 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.
Gahan literacy in 1911
Of the Gahans whose literacy was recorded, 80% could both read and write, 3.3% could read but not write, and 16.7% 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.
Gahan common first names
The most common male names were John (52), James, Patrick, Thomas and Michael; the same five names that topped the list nationally. For women it was Mary (61), followed by Bridget, Elizabeth, Catherine and Ellen.
Gahan occupations in 1911
The most common entry on a Gahan's census form was "Scholar"; 20% (124) were children at school. Among the rest, the most common occupations were farmer (16.8%), farm labourer (6%), domestic servant (3.5%) and shopkeeper / shop assistant / dealer (3.1%). Grouped by sector, agriculture accounted for 23.2% of all Gahans, followed by domestic service, retail & commerce and transport.
What religion is Gahan?
Gahans were overwhelmingly Roman Catholic, 95.3% of them. The remainder were mostly Anglican (3.7%), Plymouth Brethren (0.5%), Baptist (0.2%) and Non-Conformist (0.2%).

Visitor Notes
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Added by
Pete F
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Gahan statistics (1911)
Number: 620
Rank: 1,132
Average Age: 29
Gahan in the USA (2020)
Number: 1,216
Rank: 21,812
Note: If there were less than 100 in the USA census it will show as zero.