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
Arthur Mallam b 1856 Clerkenwell Middlesex
Ellen b 1865 Clerkenwell Middlesex
possibly Louisa b 1869 Clerkenwell Middlesex

I would particularly like to find the death for Robert Mallam who I believe died btw 1871-1901 while living at 32 Kings Cross Rd London.
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 children.