If you'd like to see (or determine) where your ancestor's farm or village was in relation to modern maps of County Monaghan, and you know the general area of the county, check out the government "Planning Maps" on this web site:
County Monaghan Interactive Planning Maps www.monaghan.ie/websitev2/gplan/default.html
Click on "Monaghan County Council" (or a major town if your ancestors lived in one of the listed towns: Carrickmacross, Castleblayney, Clones, Monaghan).
If your townland is adjacent to a town, just the town name will give you the map results you need. If looking for a farm not near a town area, type your townland name, or an approximation of it, in the "Search" (+) townland field.
"Results" (townland names) will appear below the search field. Not all townlands or villages have planning projects at any given time, but you can usually find an adjacent area map if not the exact location name. Click the "GO" emblem to the left of the "result" place name to view its map.
On the upper right portion of the MAP web page that next appears, you see an "enlarge/reduce" tool (with plus &minus marks). Clicking to the left or right gives you DIFFERENT maps from DIFFERENT time periods. For instance, as you click to the RIGHT to "enlarge" with a (+) mark, you get first a modern map, then the old Ordnance Survey map, then a modern aerial view. What a great map tool !
Do you want a printed version of the Ordnance Survey map showing your ancestor's farm or village in County Monaghan? Go to the Ordnance Survey Irelandweb site: www.osi.ie/ (Republic of Ireland, NOT Northern Ireland which is U.K. and a different web site) where you can register and purchase credits to view and/or print and order wonderfully detailed historic maps from 1837 to 1913 via the O.S. sister site "Ireland's Historic Mapping Archive":www.irishhistoricmaps.ie/historic/sample.html
Another good map source is www.pasthomes.com/ with townland maps from 1829 to 1843, viewable on-line or purchasable as prints or on CD.
You can purchase the Discovery series Ordnance Survey maps 1:50000 scale on various web sites, very nice detail with many townland and small village names. A reasonably priced web site is www.mapsworldwide.com, and there are many others. Note that most of these commercial sites today will convert U.S., Canadian or other country's credit card payment into the appropriate currency (pounds, euros or whatever is required).
One of the best tools in the Internet for locating and identifying townland names is the "Ire-Atlas Townland Search" on the Sean Ruad site:http://seanruad.comhttp://seanruad.com. Even if you only know the "sound" of your ancestors' home place, you can look for locations that sound similar, such as all townlands in Co. Monaghan (or Fermanagh or Tyrone or any other county) beginning with "Cavan-" or ending with "- drum."
Good luck with County Monaghan maps --
Annie Crenshaw - a descendant of the Calvins/Colvins of Creevlea, Clones parish, Co. Monaghan -