On the 1891 census that Ecneps posted , all those children check out on the GRO site to have a mother's maiden name of Ayre
As Robert G was single in 1881 and married by 1891 with the eldest child listed as being born 1885, this looks like a quite likely record for the marriage of Robert G Wright and Mary E Ayre
https://www.familysearch.org/ark:/61903/1:1:NXP9-GFJand there was a marriage announcement in the newspapers
Northern Star 1 Aug 1884, page 3 c 1
Marriages
WRIGHT-AYRE
July 31st at St John's Church, Darlington Robert Wright to Mary Ellen Ayre, both of Darlington
a free search of the 1921 census has a
Selina G Windale born 1889, recorded in Carlisle, and the other occupants are a Harold A, Harold and 3 others
Using just the surname Windale, and specifying Carlisle in the free search brings up just 6 names - which matches on numbers from Selina G's result -
Selina G born 1889 Darlington
Harold A born 1888 Darlington
Harold born 1912 Darlington
Doris born 1913
and the two youngest born Carlisle
Irene born 1917
Thomas W born 1920
Checking the children in the GRO index shows they all have a MMN of Wright
Boo