hello dave, on the 1871 census it looks to me as if it is probably enoch ward who married your mary phillips.
they are with their daughter gertrude aged 11 mths in cannon st. bham in the parish of st. phillips.
william archer is married to a mary too and has a daughter 7 mths but that mary was born in newbold on avon, rugby, warks and this is where they are living so presumably they would have been married there.