Surname Maps for the Hennessy Surname in Ireland
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Census Surname Maps for the Hennessy Surname
Note that it is likely that some Ulster-Scots speakers reported that they only spoke Irish. Both censuses contained a question concerned with whether a person spoke Irish, English or both. No other languages were mentioned.
Surname Counts and Rankings
There were 4,076 with the surname Hennessy in Ireland in 1901 and 4,215 in 1911.
This ranks the surname 187th in 1901 and 179th in 1911.
Surname Count in Connacht in 1901: 38
Surname Ranking in Connacht in 1901: 591st
Surname Count in Leinster in 1901: 1,169
Surname Ranking in Leinster in 1901: 165th
Surname Count in Munster in 1901: 2,820
Surname Ranking in Munster in 1901: 63rd
Surname Count in Ulster in 1901: 49
Surname Ranking in Ulster in 1901: 902nd
Religion statistics for Hennessy in 1901 - Catholic: 98%, Anglican: 1%
Religion statistics for Hennessy in 1911 - Catholic: 98%, None / Not Given: 1%, Anglican: 1%
Surnames with a similar spelling as Hennessy.
The numbers in brackets represent the number of people with the given surname in 1901. If the surname is followed by a zero then it only occured in the 1911 census.
Common surnames in areas where Hennessy is also frequent:
Comment / Enquiries
Please feel free to comment or place an enquiry of interest to people with the Hennessy surname.