Map Collections Overview

Ordnance  Survey Maps, first edition 1838

Drawn to a scale of 6” to the mile, these maps are visually beautiful and contain detailed information down to the level of individual houses and field boundaries and show all important historical and topographical features

To start with an overview of County Mayo click here.

To start with a focus on Castlebar click here.

To start with a Google street map and Mayo sheet overlay click here.

To start with a Google satellite image and a Castlebar overlay click here.

To see the example in the image on the left click here.

Bald's Map of Mayo 1830 

This map by William Bald was printed in 25 sheets in 1830 and was actually surveyed between the years 1809-1816.
William Bald was born in Scotland c. 1789 and came to Ireland in 1809 where he was appointed director of the Trigonometrical Survey of Mayo, The map was surveyed on a scale of four inches to the English mile and drawn on a scale of three inches to a mile.
Apart from the detailing of the physical features, a very important aspect of the map from a historical perspective, is the fact that it contains nearly 5,000 place-names.  

To start with an overview of County Mayo click here.

To start with an overview of County Mayo and modern street overlay click here.

To see a Google street map and Mullet peninsula overlay click here.

To see the example in the image on the left click here.

Lynch-Blosse & Garret Moore Estates

This collection of estate maps was found in Balla Secondary School, formerly Athaville House, by the principal Mr. Patrick Sheridan and for over a century prior to that had been considered lost or destroyed.  They were very generously entrusted to Mayo County Library who undertook to conserve them and digitise them in order to make them available over the Internet. The maps cover an area ranging from Balla to Lough Mask and Lough Carra and extending eastwards beyond Claremorris. The maps that belonged to identifiable sets have been grouped together as described below and the remainder have been grouped under the heading of miscellaneous

The Lynch-Blosse collection of estate maps contains the following:

Maps of Sir Robert Lynch-Blosse Estate in the Barony of Clanmaurice 1811 

This is a complete set of 38 maps, produced by Sherrard, Brassington and Greene, Dublin, 1811. Drawn to a scale of 16   perches to 1 inch. Each map has it's own reference sheet, listing the tenants in the townland and describing the quality of the land.

This set contains maps of just three townlands in the Barony of Clanmaurice, redrawn in 1819 from the 1811 set. The most interesting feature is that the re-survey was carried out by William Bald.

Produced by Clarges Greene, Dublin, 1830. Also drawn to scale of 16 perches to 1 inch and again, each map has it's own reference sheet describing the land in the townland. The complete set consists of 47 maps. Map no. 1, Castlecarra, was originally surveyed in 1811. 

There are 15 maps in all, the first is numbered 2 and the last 31. Unfortunately there is no indication whether there were any further maps in the sequence. In addition, as there are three different surveyors, it is unclear whether there were three separate collections or just one compiled by different surveyors. The surveyors were Patrick Moran, H. Joynt and Sons, Ballina, and Nolan and Shanley.. The surveys were carried out from 1856-1858.

These maps were found with maps of the Lynch-Blosse Estates. The introduction to this set of maps states that they are a copy of originals deposited in the Office of the Chief Remembrancer of the Court of Exchequer by Garret O'Moore in accordance with an order made in conjunction with a court case in which Sir Francis Lynch-Blosse was plaintiff and Garret O'Moore and others, defendants. The surveyors were Francis Plunkett and Francis McDermott. The date of the survey is 1720/21. The maps include portions of the estate in King's County (Offaly) maps.