Kenmare Estates:
See Landed Estates Database
The Economist Magazine had a recent piece on Sir William Petty:
Every now and then a true genius appears. Petty qualifies. The view of him in Ireland is coloured by his role in acquiring the Kenmare Estate then named the Landsdowne Estate;
http://en.wikipedia.org/wiki/William_Petty
However as the piece points out he is the inventor on National Accounts among other things a truly amazing polymath.
In the Paddy O’Keeffe (Bantry Antiquarian) papers now in the Cork Archives there is a reference to him prohibiting non-Protestants from working in his Berehaven mines.
Down Survey:
http://en.wikipedia.org/wiki/Down_Survey
Bowood House Family Tree Landsdowne:
http://www.bowood.org/bowood-house/
Dereen, Co. Kerry:
http://www.irelandseye.com/aarticles/travel/attractions/gardens/derreen.shtm http://www.bowood.org/bowood-house/
West Cork History 
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