Hi Ann,
If you're still looking for information, Alf Greenfield was my great great grandfather. He ran the Swan pub in Livery Street in the late 19th century, it had a boxing gym upstairs. As the English heavyweight champion, he fought the world heavyweight champion John L Sullivan twice, losing both times (one bareknuckle, one Queensberry). As a publican, he moved from the Swan to the Oxford and Cambridge in Digbeth where a lot of his belongings were lost in a fire. Amongst other things, a large portrait of him survived and was known to have been in the family in the 1990's, the property of a distant aunt who sadly l never met. He died in his 40s, partly from injuries received during his boxing career.