Here are two maps of Ireland (1) A Map of Ireland in 1848
(2) A map showing Major Landlords by County in 1881
Painting by Ruth McMillan in 1976
Shows the Head of the Rideau Canal Locks in Ottawa, Canada in 1893
October 28, 2016:
Map Source: This map is a reproduction of a widely-distributed black and white map showing Ireland in 1848.
It appears in many books, for example, The Great Hunger, Ireland, 1845-1849, by Cecil Woodham-Smith, page 13.
You will have to scroll down a bit and pan across the map -- it is large and contains a lot of detail.
I'm posting it here because it will not translate well on to Facebook.
E-mail Allan Lewis
July 18, 2017:
Here is a map showing the major landlord holdings in Ireland, by county, in 1881. Source "Landlords and Tenants in Ireland" by Finlay Dun
(a little too much overlap on this map! ... Al)