I have just received two photographs of Vera's grave/headstone.
Noted that surname on headstone is MILTON with (WATTS) included in brackets. So might be worth checking for death certificate under both surnames now you know date of death (d: 8th January 1972.
If you email me at firstname.lastname@example.org
I will forward photos to you so you can print out for Bill.
Look forward to hearing from you.