https://www.google.ie/maps/place/Durrus,+Co.+Cork/@51.6439492,-9.5091532,14z/data=!4m2!3m1!1s0x48459fe7ccd270df:0x231e3744ac95441a

Post Griffith’s Valuation records, 1853-1905, of Occupiers of Durrus West, West Cork, Townlands of 1853-1905, Crottees, Droumaniaheen, Rusheeninaska, Carrigboy (Durrus Village), Clashadoo including Ahagouna and Coolnahorna, Coomkeen, Gearhameen, Brahalish, Rosssmore, Kealties.

Used with Church records it is a useful aid to compensate for the lack of census pre 1901

Griffith 1850s:

http://www.askaboutireland.ie/griffith-valuation/index.xml?action=doPlaceSearch&Submit.x=36&Submit.y=13&freetext=Place+Name&countyname=CORK&baronyname=&unionname=&parishname=DURRUS

Tithe Applotments 1830:

http://www.corkgen.org/publicgenealogy/cork/titheapplot/durrus/tithe.html

Catholic Church, Muintervara Parish, from 1819:

http://churchrecords.irishgenealogy.ie/churchrecords/search.jsp?namefm=&namel=&location=muintervara&yyfrom=&yyto=&submit=Search

Bandon Estate Records (incomplete):

https://docs.google.com/spreadsheets/d/1LVgcai4i4QWpyLFvKhEgQAMjtdhjI6VhRrBr2XMWC2U/edit#gid=0

The records comprise a set of books which were updated periodically. Generall this was done in a different colour and it should be possible to establish the approximate date by reference to the colour. Some of the books at the start give a key to colours and dates. The system was in place until the 1970s when it was struck down by the High Court.

https://plus.google.com/photos/100968344231272482288/albums/6158920858908269985/6159048822757596354?pid=6159048822757596354&oid=100968344231272482288