Irish Resources

http://www.bc.edu/bc_org/avp/ulib/ref/guides/lit/irishgenealogy.html 

The complete classification of the wills of Ireland in public  custody is as follows: 

 I Prerogative Wills, 1536-1858, deposited in the Public Record  Office

 II Diocesan Wills, 1536-1858, deposited in the Public Record Office

 III A limited number of unproved wills dealing with Real Property  only, recorded from the year 1708, at the Registry of Deeds,  Henrietta-street.

 IV Wills from the Inquisitions (Henry VIII to George I); an excertp  of which, with an Index Nominum, is in the Public Record Office. V A few very early wills in the Royal Irish Academy, and in Trinity  College  Library"