Distribution of the Surnames in Ireland

 
The Irish times has  graphics showing the distribution of the Variants of the Ui McCarthain  in mid 19th century Ireland primarily recorded in Griffiths Valuation:-
 
 
 
An extract:-
  
Variants and total numbers.
Click to see county numbers.
SURNAME
TOTAL
Cartan22
Carten3
Carthan2
Cartin7
Carton172
McCartan242
McCarten10
McCartin9
McCarton100
 
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