Carte de l’Ordnance Survey of Ireland (OSI), 1824 à 1846

Ireland, Ordnance Survey, 1824 - 1846

Information sur la source

Ancestry.com. Carte de l’Ordnance Survey of Ireland (OSI), 1824 à 1846 [base de données en ligne]. Provo, UT, USA: Ancestry.com Operations, Inc., 2011.
Données originales :

Ordnance Survey Office, Phoenix Park (Dublin) under the direction of Lt. Larcom, R.E., by Sergeant West of the Royal Sappers and Miners. Ordnance Survey of Ireland, 1834-1845. Dublin, Ireland: For Her Majesty's Government by Hodges and Smith.

 Carte de l’Ordnance Survey of Ireland (OSI), 1824 à 1846

Les cartes détaillées de l’Irlande incluent dans cette base de données offrent un aperçu sans égal de l’Irlande du 19ème siècle au moment de la Grande Famine. Le Parlement de l’Angleterre avait envoyé Major Thomas Colby en Irlande en 1824 pour cartographier le pays. Son équipe de topographes a créé des cartes détaillées d’une échelle de 6 pouces = 1 mile (soit 1:10560) utilisées pour déterminer les évaluations des terres pour les impôts. Les cartes couvrent presque tous le pays et incluent des détails des plus petites divisions civiles de l’époque : les townland.

The detailed maps of Ireland that make up this database took 20 years to complete and offer an unparalleled look at 19th-century Ireland around the time of the Great Famine.

The English Parliament ordered Major Thomas Colby to Ireland in 1824 to undertake a survey of the country. His teams of surveyors would produce detailed maps on a six-inch = one-mile scale that would be used to determine land valuations for tax purposes. The maps were finally published in 1846. They cover almost the entire country and include details of the smallest civil division of the time: the townland.

This collection can be used in conjunction with several other databases on Ancestry.com, such as Ireland, Index to Griffith’s Valuation, 1848-1864. Researchers who find ancestors in other Irish databases can often locate where they lived on the ordnance survey maps.

Map sheets 108-125 are missing from the collection. These sheets cover approximately 10 percent of County Galway, mainly in the south of the county.