Hi, I don't know if this helps but there is a marriage record for a Epiphanius Spencer at St Peter and St Paul Sheffield West Yorkshire, on June 26th 1791. Epiphanius was a batchelor of the parish and married after banns to Sarah Hirst a spinster of the parish. Witnesses to the marriage were Sarah Winter and Mark Mullnis (I think that is what is says but I can't be sure of it definitely being Mullnis). The record does not name the parents of Epiphanius or Sarah.
Regards Julie