Robert, The only numbers I can see on those 6 inch maps, apart from the ARPs, are spot heights. Usually three figures but falling to two at the coast. I can see no other numbers. Also, although the maps may have been produced in 1837 to 1842, you must realise that the Ordnance Survey work began in 1822 (at Magilligan Point just across Lough Foyle in County Derry. It took them almost two decades, using spot heights, to go all round Ireland and come back to Magilligan Point, where, I believe they were less than an inch out. It was at a later stage that they then married the data they had collected in the Field, House and Quarto Books to the OS maps they had produced and started adding the plots and the red lettering and working out who owed what. Red numbers and upper case letters referring to plots, red lower case letters referring to houses. Now, Lindel mentioned the GVRBs (revision books) which take you up to 1930, with name changes indicating possible deaths and relationships, but, if you can find House Books for your area, these will have data relating to that key missing period between the TABs and the GV, and again with name changes. They are on the LDS site so you can order the films. Have a look. Not many people know this. They are not for the inexperienced. But they can have very valuable information. Land Books and Quarto Books are less useful. Have I changed the subject? Boyd Gray http://familytrees.genopro.com/boydgray26/Boyd/default.htm http://www.westulstergenealogy.com/ http://preview.tinyurl.com/yk7gckr -----Original Message----- From: donegaleire-bounces@rootsweb.com [mailto:donegaleire-bounces@rootsweb.com] On Behalf Of Robert Sutherland Sent: 22 April 2011 20:12 To: Donegal List Subject: [DONEGALEIRE] Fwd: Re: Fwd: Re: Townlands in the 1834 Tithes Book Hi again and thanks for the reply. Unfortunately I am still puzzled by the numbers I referred to as well as a new set of numbers I found. Please let me try to explain. The map I mentioned in my earlier post is on the OSi website. One of the pages on that site says that the 6 inch refer to the years 1837 -- 1842. So those maps are too early for Griffith's. I completely agree that the numbers must somehow relate to the tenant or owner of a particular piece of land. So I am still searching for a source that connects the numbers and a name. My new set of numbers are related to Griffith's. When I looked at Griffith's maps at griffiths.askaboutireland.ie I can see red outlines of parcels of land and, within each parcel, red numbers (as well as some red lower case letters). These red numbers are not the same as the numbers on the OSi map. As with the OSi maps, I assume that these red numbers can be connected to the name of the tenant or owner. So I ask the same question: is there a source that shows such a connection? Too many numbers! Thanks. Bob Sutherland SNIP

For those who do not know what the Revision/Cancellation Books look like you can view those related to the following Townlands in Donegal Beefpark Scrawhill The Glen Mountcharles Town URL: Valuation - Cancellation Data (Cancellation Books) Part way down the page http://tinyurl.com/44brbwh or http://freepages.genealogy.rootsweb.ancestry.com/~hiflyte/iredata/iredata.htm Click on the link that is of interest, - in the Right Hand Column "Link" and the revision page will pop up. Normally each year that a revision is insert is in a different colour. It is a bit difficult to see the colours in the images on the website. Bob CDN http://freepages.genealogy.rootsweb.ancestry.com/~hiflyte/ ============