I visited Dad's family in Kent several times during my childhood. I remember meeting Aubrey & Pheney, my cousin George who drove steam trains at the Colliery, and I remember a Ruby. We used to go blackberrying on the slag heaps. I also remember a female cousin who was about my age, with a very strong family resemblance - I thought her name was Barbara. My father, Harry, died in 1970, which fits with your time-line. If it helps, my first name is Pauline.