Research Methods & Core Sources

Key Record Sets

Type	Coverage	Where to Search
Griffith’s Valuation	c. 1857	AskAboutIreland.ie
Tithe Applotment Books	1820s–30s	National Archives of Ireland
Catholic Parish Registers	1740s–1880s	registers.nli.ie
Civil Registration	1864 →	IrishGenealogy.ie
Census of Ireland	1901 / 1911	Census.NationalArchives.ie
Estate & Deed Records	1700s–1900s	PRONI · Registry of Deeds Index Project

Geographic Pattern Summary

• Core cluster: Drumshanbo–Arigna–Ballyfarnon
• Northern link: Swanlinbar–Kinawley
• Southern trade route: toward Longford

Tips

• Track recurring sponsors and naming patterns (James, Catherine, Cornelius, Terence).
• When NLI gaps exist before 1860, use Tithes + Griffith’s + Estate rentals for continuity.
• For DNA triangulation, group testers by these parishes to identify 19th-century cousin lines.