Believe it or not I start to search for this family again last night!
Thanks, Kim. The 1882 marriage for Arthur McMurrough & Eliza McLoughlan is unlikely to be the same Arthur McMurrough as I now think his father was John & I did come across other McMurroughs in Armagh but will certainly make a note of it as you never know.
I had collected lots of McMurroughs from Monaghan and was fairly sure that Arthur was from Glaslough and his parents John and Catherine (nee Sherlock) so that pension application looks very interesting.
The surname is earlier more often recorded as McMurrer but also McMurrin, McMurrier ... I think I found once as McMurray.
Arthur McMurrough & Matilda Tierney had 10 children, all born Belfast, from what I've found- John (1887- named for both grandfathers if I'm correct), Arthur Henry (1889), William Leo (c1892), Kathleen (1894- after Arthur's mother?), Margaret (1896), Josephine (1897), twins Thomas & Hubert (1898), Michael (1900), Edward (1901).
1911 census says married 24 years, 7 children/7 living. I think they didn't understand the question & just counted their living children. 24 years takes marriage c1887 or so.
http://www.census.nationalarchives.ie/pages/1911/Antrim/Falls__Belfast_/Grosvenor_Place/180954/After collecting Glaslough McMurrers it looked like Arthur's parents were John McMurrer & Catherine Sherlock. Last night (with the help of a 3 month subscription to Ancestry) I found several family trees and one, with reliable details, also gave them as Arthur's parents.
John McMurrough (c1818-17 Jan.1900 Glaslough), butcher, m. Catherine Sherlock (c1836-1 Nov.1891 Glaslough). Children: ?Arthur (c1858), Thomas (c1859), John (c1861), Mary Ann (1864), Francis (1866), Catherine (1868), twins Margaret & Mary Ann (1871), Joseph (1873), Henry (1876).
Many thanks to everyone. Off to do some more searching ...