You can search this AskaboutIreland site by family name and placename [has gone offline at present]. The valuation of NALIL territory was carried out about 1861 and the revised records are available at PRONI.
PRONI also has some old land registry records and I found a will belonging to one of my great grandparents in the files. The land registry reference is of the form NI/xxxx where x is a digit from 0 to 9 and the reference can be found in the certificates held at Land and Property Services.
