If it were possible to trace the Deeming family in England through to the present day, mention of any descendants who may still be living can be exchanged via PM.
From wiki:
Frederick Bailey Deeming (30 July 1853 – 23 May 1892) was an English-born Australian murderer.
Deeming was born in Ashby-de-la-Zouch, Leicestershire, England, son of Thomas Deeming, brazier, and his wife Ann, née Bailey.
It's a fascinating project David. I really hope you are successful in your search.