Surname distribution maps for Dubbin
Dubbin in the 1881 Census
Dubbin in the 21st Century
The maps, if available, show both where there are more people named Dubbin and where they are most concentrated.
The darker the colour, the more people in that county are named Dubbin.
The larger the dot, the greater the proportion of people in that county are named Dubbin.
Hovering over the dots will give you the individual statistics for that county.