Mrs. Masterson continues her assault on Famine-era Irish genealogical sources with this transcription of 1851 census records for County Antrim, and it may be her most ambitious effort to date. As is well known, most of the 1851 Irish census was destroyed in the 1922 fire at the Four Courts in Dublin. The largest collection of surviving census fragments pertains to County Antrim, and, in particular, to the following parishes: Aghagallon, Aghalee, Ballinderry,...