William family name history and map
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William in 1911 Ireland
The 1911 Census recorded 367 people named William in Ireland; roughly one in every 12,000 people carried the name. There were noticeably more men than women recorded: 295 men to 69 women. (A small number, 3, had no sex recorded.)
Counties with William in Ireland
Antrim had the largest share of Williams, 18% (66 people). Next came Down (53), Dublin (51), Cork (46) and Wexford (19).

William average age in 1911
The average William in 1911 was 31.6 years old, 30.6 for men and 36.1 for women; slightly older 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.
William literacy in 1911
Of the Williams whose literacy was recorded, 87.8% could both read and write, 2.8% could read but not write, and 9.4% could do neither. Men came out slightly ahead, 88.3% reading and writing against 85.3% 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.
William common first names
The most common male names were Thomas (9), John, Wilson, Fitzpatrick and Henry. For women it was Mary (9), followed by Jane, Kate, Elizabeth and Martha.
William occupations in 1911
The most common entry on a William's census form was "Scholar"; 15.8% (58) were children at school. Among the rest, the most common occupations were general labourer (7.9%), farmer (6%), clerk / office worker (4.1%) and domestic servant (3.8%). Grouped by sector, agriculture accounted for 9.8% of all Williams, followed by general labourers, retail & commerce and transport.
What religion is William?
The largest religious group among Williams was Roman Catholic, at 45.8%. The remainder were mostly Anglican (28.6%), Presbyterian (17.4%), Methodist (6%) and Plymouth Brethren (0.5%).


Visitor Notes
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Added by
Pete F
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William statistics (1911)
Number: 367
Rank: 1,675
Average Age: 32
William in the USA (2020)
Number: 11,890
Rank: 2,962
Note: If there were less than 100 in the USA census it will show as zero.
Ref: william
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