I think I may have found a possible in 1901:
It's in Tewkesbury in Gloucester, but if they were performers they would have travelled around:
John Stewart, age 30. Groom, (not domestic)
Emily Stewart, 28, Actress.
I know she is Emma, not Emily, but that is quite a coincidence.
The entry also says they were both born in America, but that could be a simple error on the part of whoever gave the information. Both were boarders, along with others and at least one more of them is an Actress as well.
Take at look at Class: RG13; Piece: 2467; Folio: 102; Page: 19.
It's in the parish of Holy Trinity, Tewkesbury, or if you search John Stewart age 30 born US it should come up on most search sites.
Can't guarantee they are yours, but take a look and see what you think.