I would add Neil and Christine Hamilton, but I would also subtract Fanny and Johnny Cradock from your original list, because they were never properly married. They pretended that they were married during their TV career in the 1950s and 60s, but they never actually got "married" until 1977. Even then, they were not properly married because Johnny Cradock was Fanny's fourth husband, and she never bothered to divorce her 2nd or 3rd husbands, both of whom were still alive when she married Johnny.