« Reply #3 on: Saturday 17 August 13 12:59 BST (UK) »
I think you're on the right track with the name Coward as London Lives has a deposition from a Hugh Coward, apprentice cork cutter to Joshua Cubbidge of No 2 Thomas St, Southwark upon finding his master Joshua dead by hanging himself.
There is also an online genealogy for Hugh that has him as the son of John Coward, and brother to the John Coard (Coward) mentioned by Cinderdrinker.
Jo

Puplett, Sonnex, Lott, Dunkiss, Hart - London area.
Hudson, Jenner, Dedman - Sussex
Leach, Hopkins, Saunders - Wales
Leach, Lipscombe - Hampshire
Sipthorpe - Lancashire
Walters - Cornawall & Australia
Kingshott, Matheson, Pitt, McDonald, Keogh - Australia.