The Griffith Valuation was published in c1862 although it was compiled in earlier.
The Cancelled Valuation Books start c1864. So if the occupier changed there should be a
note of the year in the Right hand margin.
A change of occupier or immediate Lessor could indicate the death of the former or
Plots marked with "In Fee" in the Immediate Lessor's column and written in
the same coloured ink as the date in the right hand column indicates when that plot was
bought out under a land purchase act (LPA)