From Electoral Rolls on Ancestry, I've learnt that from 1951 to 1964 Kathleen Saunders was living with William Timothy McCarthy, who was about her mother's age, at 10 Boreman House, Thames Street, Greenwich. He died in 1968 at 38 Bideford Road, Downham, Lewisham and perhaps Kathleen was still living with him. Are there any online resources I could use to track her after this? My grandfather born in 1928 has never known a cousin, but this Kathleen is his cousin.
She would have been born between 1917 and 1930 and likely won't be alive anymore but I'm still trying to learn what I can of my grandfather's big mess of a family while he's still alive, and hoping she has some descendants out there. I've tried to match her with marriages in the London area after 1964 but I can't be sure of any, ditto with deaths for any Kathleen Saunders.
Thanks for any guidance.