Hi Geoff,
On Elizabeth's birth certificate Joseph's occupation is 'Coal Miner'.
The Margaret Miller death you found is a definite possibility. I have sent for the other one so will see what that turns up and if not right will order the other one.
Which ever Margaret is the right one it is more than likely that Joseph married again.
There are two death registrations for a Joseph Miller
a. Joseph Miller b. 1831 d. Dec 1/4 1888 57 yrs Whitehaven 10b pg371. or
b. Joseph Miller b. c 1832 d. Sept 1/4 1881 49 yrs Wigton 10b pg293.
His death cert won't lead me back to his parents though.
Karen