The Derrylahan Valuation Office Field books are available for July 1839.http://census.nationalarchives.ie/reels/vob/IRE_CENSUS_1821-51_007246947_00171.pdf http://census.nationalarchives.ie/reels/vob/IRE_CENSUS_1821-51_007246947_00172.pdf http://census.nationalarchives.ie/reels/vob/IRE_CENSUS_1821-51_007246947_00173.pdf
