"Kilkenny, a county of Ireland, province of Leinster, 40 m. long and 20 broad; bounded E by Catherlough and Wexford; W by Tipperary, N by Queen's county, and S by Waterford, containing 510,000 acres, divided into 127 parishes. The soil is generally of a good quality, with little bog land. In the N are excellent quarries for flags; coal is produced in great abundance; in the limestone district are valuable marble quarries; and manganese, iron ore, lead ore, and some indication of copper ore, are perceived in different parts. Chief rivers, the Suire, Barrow, and Nore. It sends 2 members to parliament. Pop. 157,096."
[From The New London Gazetteer (1826)]
The Irish Ancestors website (subscription) has the following types of records: State Registration of Births, Marriages & Deaths, Census returns, Land records, Church records, Genealogical Office records, Gravestone inscriptions, Directories, Newspapers, Wills, Deeds, and Occupations.
The Fianna website's pages for County Kilkenny provide important addresses and extensive information about online and other genealogy resources.
Roots Ireland (subscription) "offers access to a unique database of more than 20 million Irish records". Its Kilkenny coverage includes Baptismal/Birth Records, Marriage Records, Burial/Death Records, Census Records and Griffith's Valuation (Free Access).
Here is the full text of a lengthy illustrated article from the Sheffield Graduate Journal of Archaeology entitled: "Women and personal possessions: 17th-century testamentary evidence from counties Waterford and Kilkenny, Ireland".