I cant find anything on-line for the 1892 Marriage but can give this info (descendants may already have this but I'm bored)
1881 Census
11 Northumberland Terrace, Backworth, Northumberland
John Glendinning, 54, Head, Mar, Coal Miner, born St John Lee
Margaret Glendinning, 49, Wife, Mar, born Haydon Bridge
Thomas Forster, 23, Step Son, Coal Miner, born Hexham
Margaret J. Forster, 20, Stepdaughter, born Hexham
Thomas Glendinning, 18, Son, born Brancepeth
John G. Glendinning, 13, Son, born Brancepeth
HANNAH Glendinning, 9, Daug, born Brancepeth, Durham****
GRO Index Birth Reg;
GLENDENNING, HANNAH, Mother MN FORSTER***
GRO Reference: 1871 S Quarter in DURHAM Volume 10A Page 396
JOHN GEORGE G 1866 has same Mothers mn FOSTER
Looks like Margarets (Foster) Children were illeg.
1861 Census
Hexham, Northumberland
Thomas Forster, 68, Head, Widr, Labourer
Margaret Forster, 29, Daug, Unm, Housekeeper
Mary Forster, 14, Granddaughter
Elizabeth Forster, 8, Granddaugher
Thomas Forster, 5, Grandson
Margaret Jane Forster, 1mth, Granddaughter
All born Hexham
FreeBMD has a 1863 Marriage with John Glendinning and Margaret Foster on same page