Very numerous: all provinces, especially Connacht and Munster. An Irish patronymic adopted by the Norman Nangles: Mac Oisdealbhaigh from os, a deer and dealbh, likeness, so "deer-like". They were seated in Mayo. Mod.Ir. Mac Coisteala. IF.
Mac Coistealbh
Costello: féach Mac Oisdealbhaigh.
Mac Oisdealbh
Costello: an-líonmhar: Connachta & Mumhain. Shíolraigh siad ó Oisdealbh, mac le Gilbert de Nangle (de Nógla) a bhí i gConnachta sa 12 céad. Cruthúnas gur gaelaíodh an chlann chumasach sa go luath tar éis an Ionraidh. Bhí muintir Choisteala agus muintir Mhic Dhiarmada in achrann go minic agus is as an dteannas san an eachtra ba bhun leis an amhrán "Úna Bhán" - ceann de mhór-amhráin an domhain. Fréamh: os + dealbh - ar nós fia. Litriú nua: Mac Coisteala.
Costello households in each
county in the Primary Valuation property survey of 1847-64.
Click on a county name for a breakdown of the number of households by parish (paying).