For background on how the map was made (and its flaws), see the relevant blog entry.
|MacVicar||rare: Down-Monaghan etc. See Mac Vicker.|
|MacVicker||fairly numerous: Antrim-Belfast etc. Ir. Mac an Bhiocáire (son of the vicar). This name existed in Oriel (Monaghan), related to the Mac Mahons but the distribution suggests that many are of Scottish origin from Argyle. SI & SS.|