Clay family name history and map
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Clay in 1911 Ireland
The 1911 Census recorded 73 people named Clay in Ireland; roughly one in every 60,000 people carried the name. The name was split fairly evenly between men and women: 35 men and 38 women.
Counties with Clay in Ireland
Antrim was Clay country: 26% of them (19 people) lived there in 1911. Next came Cork (17), Down (16), Dublin (11) and Cavan (8).

Clay average age in 1911
The average Clay in 1911 was 30.2 years old, 27.6 for men and 32.6 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.
Clay literacy in 1911
Of the Clays whose literacy was recorded, 74% could both read and write, 4.1% could read but not write, and 21.9% 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.
Clay common first names
The most common male names were John (6), William, Edward, Henry and Annesley. For women it was Mary (5), followed by Agnes, Annie, Eliza and Jane.
Clay occupations in 1911
The most common entry on a Clay's census form was "Scholar"; 23.3% (17) were children at school. Among the rest, the most common occupations were other maker / factory worker (8.2%), general labourer (6.8%), farm labourer (4.1%) and no occupation / dependent (4.1%). Grouped by sector, manufacturing & trades accounted for 8.2% of all Clays, followed by general labourers, domestic service and retail & commerce.
What religion is Clay?
Most Clays, 56.2%, were Roman Catholic. The remainder were mostly Anglican (24.7%), Presbyterian (12.3%) and Plymouth Brethren (5.5%).
Visitor Notes
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Added by
Pete F
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Clay statistics (1911)
Number: 73
Rank: 4,636
Average Age: 30
Clayin the USA (2020)
Number: 47,234
Rank: 710
Note: If there were less than 100 in the USA census it will show as zero.
Ref: clay
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