Fennell is just one of the eighteen families that featured in the original book The Gentry & Aristocracy of Kildare published in 2004 and now out of print. In this series 11/12 books will be published in total making all the data relating to the 18 families available. The material for all the books was gleaned from all available printed sources and in many cases from family members living in 2004. Most of the images are originals. Most books contain an Index and Footnotes. The material has been updated as of 2013.