[Nell]

Chap in question is William Ehn - sometimes transcribed as Enn or Elm.
Middle name sometimes given as Edward.

William was born 1792 in London.

In 1851 William was living at Duke Street, St Bartholemew the Great in London.

He is a witness for a wedding 04 Aug 1857 of his stepson Lewis Marsden at St James Clerkenwell.

But he is recorded as deceased on his daughter Clara's marriage cert on 04 Oct 1857 at St John the Baptist, Hoxton.

In 1861 his wife Matilda is listed as a widow living at 24 Westmoreland Place, Shoreditch, London.

So a window of 2 months - but I can't find a death or a burial.
Help!