Mollaghan family name history and map
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Mollaghan in 1911 Ireland
The 1911 Census recorded 72 people named Mollaghan in Ireland; roughly one in every 61,000 people carried the name. There were noticeably more men than women recorded: 40 men to 32 women.
Counties with Mollaghan in Ireland
The Mollaghans were heavily concentrated in Longford, home to 94.4% of them (68 people). Next came Derry (2) and Tyrone (2).

Mollaghan average age in 1911
The average Mollaghan in 1911 was 35.9 years old, 38.8 for men and 32.2 for women; noticeably 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.
Mollaghan literacy in 1911
Of the Mollaghans whose literacy was recorded, 81.9% could both read and write, 6.9% could read but not write, and 11.1% 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.
Mollaghan common first names
The most common male names were James (8), Francis, Michael, Thomas and John. For women it was Margaret (6), followed by Bridget, Mary, Anne and Ellen.
Mollaghan occupations in 1911
The most common occupation among Mollaghans was farmer, 36.1% of them (26 people). Next came scholar / student (11.1%), farm labourer (5.6%), general labourer (5.6%) and domestic servant (4.2%). Grouped by sector, agriculture accounted for 43.1% of all Mollaghans, followed by domestic service, general labourers and retired & pensioners.
What religion is Mollaghan?
Mollaghans were overwhelmingly Roman Catholic, 100% of them.
Visitor Notes
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Pete F
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Mollaghan statistics (1911)
Number: 72
Rank: 4,678
Average Age: 36
Mollaghan in the USA (2020)
Number: 0
Rank: 0
Note: If there were less than 100 in the USA census it will show as zero.
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