Denis family name history and map
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Denis in 1911 Ireland
The 1911 Census recorded 72 people named Denis in Ireland; roughly one in every 61,000 people carried the name. There were noticeably more men than women recorded: 53 men to 19 women.
Counties with Denis in Ireland
Cork was Denis country: 36.1% of them (26 people) lived there in 1911. Next came Dublin (20), Kerry (4), Wexford (4) and Wicklow (4).

Denis average age in 1911
The average Denis in 1911 was 29.5 years old, 27.9 for men and 33.9 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.
Denis literacy in 1911
Of the Denises whose literacy was recorded, 82.4% could both read and write, 4.4% could read but not write, and 13.2% could do neither. 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.
Denis common first names
The most common male names were John (4), Nolan, Mc Carthy, Brien and Murphy. For women it was Mary (3), followed by Alice, Anna, Bridget and Catherine.
Denis occupations in 1911
The most common entry on a Denis's census form was "Scholar"; 12.5% (9) were children at school. Among the rest, the most common occupations were general labourer (8.3%), farm labourer (6.9%), farmer (5.6%) and carpenter / joiner (4.2%). Grouped by sector, agriculture accounted for 13.9% of all Denises, followed by retail & commerce, general labourers and building & construction.
What religion is Denis?
Denises were predominantly Roman Catholic (86.1%). The remainder were mostly Anglican (8.3%) and Presbyterian (4.2%).
Visitor Notes
Review type for post source and surnames source type not found
Added by
Pete F
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Denis statistics (1911)
Number: 72
Rank: 4,678
Average Age: 30
Denis in the USA (2020)
Number: 6,087
Rank: 5,514
Note: If there were less than 100 in the USA census it will show as zero.
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