Try 1824 Pigot's Directory on
www.failteromhat.comToo many Jackson's in the telephone book living in the City of Dublin (postal codes) I try Tudor's but you get with the phone book all names first and last that begin with T. I don't have the patience to weed the Dublin ones out.
Other resources:
www.censusfinder.com United Kingdom+Ireland+county (City)
www.igp-web.com + county ( in these two resources are diffent types of information, some baptism records, tithes, etc. Look for the archives for gravestones/burials
Clontarf Cemetary
www.findagrave.comwww.ancestorsatrest.comwww.interment.netgoogle Clontarf graveyard-Dublin and many places to look for information
Annette Code