Deasy family name history and map
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Deasy in 1911 Ireland
The 1911 Census recorded 968 people named Deasy in Ireland; roughly one in every 4,500 people carried the name. The name was split fairly evenly between men and women: 478 men and 490 women.
Counties with Deasy in Ireland
The Deasys were heavily concentrated in Cork, home to 89.7% of them (868 people). Next came Mayo (62), Dublin (15), Laois (8) and Tipperary (4).

Deasy average age in 1911
The average Deasy in 1911 was 28.4 years old, 28.6 for men and 28.2 for women; a touch younger 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.
Deasy literacy in 1911
Of the Deasys whose literacy was recorded, 80.3% could both read and write, 2.2% could read but not write, and 17.5% could do neither. Men came out slightly ahead, 82.8% reading and writing against 77.9% of 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.
Deasy common first names
The most common male names were John (86), Patrick, William, Michael and James. For women it was Mary (87), followed by Ellen, Margaret, Hannah and Kate.
Deasy occupations in 1911
The most common entry on a Deasy's census form was "Scholar"; 24.5% (237) were children at school. Among the rest, the most common occupations were farmer (16.2%), general labourer (5.1%), farm labourer (3.8%) and domestic servant (2.7%). Grouped by sector, agriculture accounted for 20.9% of all Deasys, followed by general labourers, domestic service and textiles & clothing.
What religion is Deasy?
Deasys were overwhelmingly Roman Catholic, 99.9% of them. The remainder were mostly Anglican (0.1%).
Visitor Notes
Review type for post source and surnames source type not found
Added by
Pete F
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Deasy statistics (1911)
Number: 968
Rank: 811
Average Age: 28
Deasy in the USA (2020)
Number: 1,004
Rank: 25,728
Note: If there were less than 100 in the USA census it will show as zero.

