Do anyone know of an online resource BMDs for this church, Familysearch seem to suggest they have them online, but I find the site SOOOO difficult to navigate and find what i'm after (if anyone has tips on that, i'm all ears!). The dates i'm after are late 1820's (I think it was built in 1826ish anyway) to c1850.
St George, Portobello Street, Brook Hill, was the first "Million Act" church to be built in Sheffield and was erected between 1821-1825.
You won't find any marriages there before 1848 as the Parish Church of SS Peter & Paul (later cathedral) had the monopoly on marriages, so all marriages before 1848 are at the parish church, or the Register Office after July 1837.