Mahaffey family name history and map
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Mahaffey in 1911 Ireland
The 1911 Census recorded 84 people named Mahaffey in Ireland; roughly one in every 52,000 people carried the name. The name was split fairly evenly between men and women: 41 men and 43 women.
Counties with Mahaffey in Ireland
The Mahaffeys were heavily concentrated in Antrim, home to 56% of them (47 people). Next came Tyrone (16), Down (12), Armagh (7) and Leitrim (1).

Mahaffey average age in 1911
The average Mahaffey in 1911 was 24.8 years old, 23.4 for men and 26.2 for women; noticeably 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.
Mahaffey literacy in 1911
Of the Mahaffeys whose literacy was recorded, 79.8% could both read and write, 1.2% could read but not write, and 19% 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.
Mahaffey common first names
The most common male names were James (8), John, Thomas, Alexander and Henry. For women it was Maggie (5), followed by Margaret, Sarah, Ellen and Mary.
Mahaffey occupations in 1911
The most common entry on a Mahaffey's census form was "Scholar"; 23.8% (20) were children at school. Among the rest, the most common occupations were textile worker (20.2%), farmer (4.8%), general labourer (3.6%) and other maker / factory worker (3.6%). Grouped by sector, textiles & clothing accounted for 20.2% of all Mahaffeys, followed by agriculture, domestic service and general labourers.
What religion is Mahaffey?
The largest religious group among Mahaffeys was Presbyterian, at 34.5%. The remainder were mostly Anglican (27.4%), Roman Catholic (16.7%), Methodist (13.1%) and Congregationalist (7.1%).
Visitor Notes
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Added by
Pete F
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Mahaffey statistics (1911)
Number: 84
Rank: 4,296
Average Age: 25
Mahaffey in the USA (2020)
Number: 7,645
Rank: 4,514
Note: If there were less than 100 in the USA census it will show as zero.
Ref: mahaffey
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