Hi there, this took a while to find.

It was entered as 1867  not 1866   I have made a comment in Ancestry to correct it. (no wonder you couldn't find it.)
Burriscarra, Tuam - Catholic Parish Registers at the NLI

Ok,

Margot

Margot,

Thank you very much for your help.

As to the Burriscarra, Tuam response. Where exactly is that church/chapel? I'd like to see if I can find a photo of it.

Regards

Mike

In the Register NL site where I found it, the main page shows............see below.
Burriscarra would be the Parish at that time.      All the little Parishes are in the list, these  would been know to locals but after some time all came under Burriscarra.    Someone may correct me.

Church is either Church of Ireland or Roman Catholic. A chapel is a smaller version which is not a Church,  may be a meeting room where they have a nonconformist service. 
 

Burriscarra          

Archdiocese of Tuam | County of Mayo

Variant forms of parish name:

Ballintubber

Kilawalla

Carnacon

Parishes as inscribed in register: Abbert, Abbeyknockmoy, Achill, Aghamore and Knock, Annadown, Annah, Arran, Athenry, Aughagour, Balla, Ballinakill, Ballindoon, Ballinrobe, Becan, Borriscarra, Clare Island, Claremorris, Corrofin and Claretuam, Crosboyne, Crossboyne and Tagheen, Devonagh, Donoughpatrick and Kilcoony, Drum, Dunmore, Garumna, Kilcoleman, Kilcommon, Kilgiver, Killereran, Killererin, Kilmeena, Kiltollagh, Kiltullagh, Kilvine, Lacka, Liskeava and Adrigool, Mayo, Moyrus, Newport, Taugheen and Crossboyne, Templetoher, Tuam, Turla and Westport.