My apologies - quite right too ..
Mary McCurdy [1890] married Joseph Mitchell [1873 - 1955] on 20 February 1905 at St Charles’ Chapel, Newton, Cambuslang after publication according to the forms of the Roman Catholic Church by Louis De Meulanaire in the presence of John McCurdy and Lizzie Cannon (he was a son of Robert Mitchell, farmer, and Hannah McDade, both of whom were, in 1905, deceased) he was a steelworker, aet 30, from Flanagan’s Building, Westburn, Cambuslang (he signed with his X mark), and she was aet 15, living at 24 Dunlop Street, Newtown, Cambuslang. They were living at Cambuslang in 1911C - he was aet 35 and Mary was aet 21, and again in 1921C. He died aet 82, his death being registered in Cambuslang
in turn, we have:
Archibald McCurdy [1846/9 - 2 January 1897] married Catherine Murphy [1860 - 1918] on 23 October 1874 in St. Francis Chapel, Cumberland Street, Glasgow, after banns according to the forms of the Roman Catholic Church by Antonine Scannell in the presence of Eugene Harrington and Ann Murphy (she was a daughter of Daniel Murphy, an iron work labouer, (deceased), and Janet McAulay) he was an iron work furnacement, and a widower, aet 33, of 293 Thistle Street, Hutchesontown, Glasgow and she was a domestic servant, aet 26, also living at 2923 Thistle Street, Hutchesontown, Glasgow (she signed with her X mark) - steelwork labourer of 67 Westburn Rows. He was born at Bogend, Cambuslang - note his surname was recorded as McKurdy on his marriage registration, and as McKardie in 1891 Census
As far as I am aware Archibald and Catherine Murphy McCurdy had:
Archibald [1878]; Patrick [1877]; Isabella [1878]; Elizabeth [1881]; Annie [1884]; John [1886] and Mary [1890]. Patrick and John died unmarried. Archibald had family
I know you already have this detail, from the Mitchell/McDade connection:
Walter Mitchell [c1795 - indicative date] , farmer
Robert Mitchell [1818/29 - 10 April 1898] married Hannah McDaid aka Ellen McDade on 24 September 1864 at Dunfanaghy Registrars Office by John Moffitt, Registrar, in the presence of Hugh Hofferman and Andrew McNutt (she was a daughter of Dominick McDaid, farmer) he was a farmer, aet 35, from Down, and she was from Kilmacloo, aet 24. She signed with her X Mark. His death at Dooen, (registration district of Letterkenny), aet 80, was registered by Robert Mitchell, of Dooen, his son. He was a farmer.
Susan McDaid [1818 - 28 December 1878] - her death at Glenkeeragh, (registration district of Church Hill, (union of Letterkenny) was registered by Ann McDaid, of Glenkeeragh, by her X Mark - she was a farmer’s widow, aet 60. Note: Glenkeeragh lies to the west of Letterkenny
John Mitchell [27 September 1864] - his birth at Glenkeragh,(registration district of Church Hill, union of Letterkenny) was registered by Susan McDade, grandmother, of Glenkeragh. Father, Robert was a labourer, resident at Doohan.
Susan Mitchell [10 March 1866] - her birth at Glenkerah was registered by Ellen Mitchell, her mother, by her. X. Mark. Her father was a farmer.
Joseph Mitchell [1874 - 1955] married Mary McCurdy in 1905 (registration district of Cambuslang) - does this seem right for their children?
Catherine Mitchell [1907 - 1996] Cambuslang
Mary Mitchell [1909] Cambuslang
Joseph Mitchell [1912] - Cambuslang
Archibald Mitchell [1914] - Cambuslang
John Mitchell [1917 - 1931] Cambuslang
Edward Mitchell [1920 - 2007] Cambuslang
Mary Nicholson (descends from one of the above?)
Robert Mitchell [1856 - 4 February 1934] dsp - his death at Dooen, Letterkenny, was registered by Bella Russell, from Dooen. He was a labourer. - death registered on 3 March 1934
(Bella Russell also registered the death of an Eliza Jane Russell [1866 - 20 February 1934], aet 68, from Dooen, a married woman, and wife of a labourer - on 28 February 1934).