Online Map Collection
Introduction to the online maps available on MapBrowser
1659 Down Survey Maps
Following the Cromwellian Conquest of Ireland at the beginning of the 1650s, the Commonwealth government was indebted to many private individuals – adventurers –who had advanced sums of money to finance the war in Ireland. In addition to this, many soldiers who fought in the war were owed large arrears of pay. Both classes were to be repayed by the granting of confiscated lands in Ireland. To facilitate this extensive transfer of land, William Petty was appointed, in 1654, to measure and map, within 13 months, the forfeited lands, the crown lands, and the church lands in the 22 counties set apart for the soldiers. He was also to define the boundaries of the baronies within the counties. Petty’s survey became known as the Down Survey, because the measurements were ‘laid down’ as maps. The Down Survey mapped all the baronies in which there were forfeited lands. Petty appears to have mapped all the baronies of Ireland except those of counties Galway, Roscommon and Mayo (except one barony), and the townlands on nearly 50% of the total area of Ireland. The boundaries of all the baronies were mapped, but in the baronies where there were no forfeituritures, only an outline map was made. The survey did not include details on lands classified as 'Protestant lands.'
1837 Ordnance Survey Maps
Between 1829 and 1842 Ordnance Survey Ireland completed the first ever large-scale survey of an entire country. Acclaimed for their accuracy, these maps are regarded by cartographers as amongst the finest ever produced. The 1837's first edition of the Ordnance Survey's 6-inch maps in Sligo show the boundaries before the Local Government reform of 1898, i.e. before the DEDs east of Ballina (Ardnaree North, Ardnaree South Rural, and Ardnaree South Urban) were transferred from Sligo to Mayo.
How to use MapBrowser
This first option gives access to some pre-prepared scenarios.
This option opens and closes the Search/Overview window. Use this window to find and mark locations like Towns, Townslands or Monuments on maps (where available), to see the current display's position and to move its focus to a different location.The Search/Overview window shows the whole county with a red circle marking the location of the area shown in the main window.
This enables you to switch from the Pan Cursor below to select the Standard Arrow Cursor - necessary to highlight a feature on a map. Use this option to activate the Standard Arrow Cursor to select map symbols.
This enables the Pan Cursor, allowing you to move around a map. Use this option to activate the Pan Cursor to drag and drop the map display.
This enables zoom-in of a selected area on a map. Use this option to activate the Zoom-In Cursor to zoom-in (and centre) on a spot or to describe a zoom-in area with an rectangle.
This enables zoom-out on a map. Use this option to activate the Zoom-Out Cursor to zoom-out (and centre) on a spot.
This opens and closes the maps Directory window which will show you the complete collection of maps in the system.
This opens the Symbols & Labels window, allowing control over display of symbols on the maps.
This opens the Map Legend window (where applicable).
This opens the Print window, allowing printing of the current map display, including automatic rotation and down-scaling (when nessary).
This toggles the zoom slider on and off.
This is the zoom slider, enabling easy zoom-in and zoom-out on maps. If enabled, clicking the round button on the top of the slider allows you to fit the whole of the current map into your window.
Access Sligo Libraries Online Map Collection