Factoring in the Irish accents, I suspect that this is the marriage of Edmund Farrell & Elizabeth Caton:
Jul-Aug-Sep 1837, Marylebone, Vol 1 p 226
Edmund Farrell & (same page) Betsey Keaton
The image of the marriage is linked below, and gives the address as Calmell Building, which is the same as on the 1840 record for Elizabeth's admission to the Workhouse Infirmary. Betsey/Elizabeth Caton/Keaton's father is named as Philliphttps://www.ancestry.co.uk/interactive/1623/31280_194680-000...
ADDED: No image online, but this looks like George & Elizabeth's marriage:
Jul-Aug-Sep 1850 Chelsea Vol 3 Page 65
George Darcy & (same page) Elizabeth Caten
ADDED: As George was dead by 1880 I've looked for a death for him, but without much success. The closest I can find is this:
DORSEY, GEORGE aged 49
GRO Reference: 1863 D Quarter in KENSINGTON Volume 01A Page 24
Margaret Darcy married John Blake in the same year/quarter, also in Kensington.