Hello Mr B,
Your Mary Ann Eason was married to a Thomas James Byner whose father Thomas Byner married three of my Great Aunts. He was born 1848 in Limehouse, died 1904 in Stepney.
When you say you have got back to Cambridge I have to assume you mean Mary Ann Eason's father William Eason born 1840 in Milton, Cambridgeshire.
As for photo's I have no known photo's of the Eason's or Byner's but I do have many un-named photos who are in some way related/friends of my family.
As you know the marriage date of Mary Ann Eason, did you get that from the certificate? If so any chance of a copy.
All the best
Tom