You can access the following local history/studies' resources online
Griffith’s Valuation - Ireland's primary 19th Century Genealogical Source 
JSTOR - Online Irish Journals in the Arts, Humanities and Science from the 17th Century to the present 
Historic Ordnance Survey Maps - Archive of historic maps
Historic Kilkenny ebooks 
Kilkenny Digital Archive - Images, texts, art and sounds from the collections of Kilkenny County Library, Kilkenny County Council and partner organisations, communities and individuals 