I am looking for information on Robert Mallam Thompson bc1826 St Martin's in the Field Middlesex England and his wife Ellen Kenny or Kenney. Robert and Ellen were married in 1854 at St Barnabas Church Parish of St Luke Middlesex

They had the following children
Robert Timothy b 1855 17 Skinner St Clerkenwell Middlesex d 1918 Australia
Arthur Mallam b 1856 Clerkenwell Middlesex d 1931 Westminster England
Ellen b 1865 Clerkenwell Middlesex
possibly Louisa b 1869 Clerkenwell Middlesex

Robert Mallam died 16th Oct 1884 at 56 Kings Cross Road London his wife Ellen was alive at this date but I have been unable to find anything on her or her daughters since then any help would be appreciated.
I would also appreciate information on Ellen whose father was said to be Timothy Kenney a Mercantile Agent in 1854, and any information on any of the Kenney/Kenny family.