Hay John,
Im not 100% sure about Elizabeth, she is UK based (or was).
The books are very detailed although a little jumbled as she seemed to struggle to lay all the info out. There are 3 volumes to the whole story but only the first volume relates to us - the rest is about the American Tillmans which is interesting never the less.
I would strongly suggest buying yourself a copy from Heritage Books. (I think if you request as a family member you don't have to pay)
My father David came to SA in 1946, in December, if my memory serves me correctly. He brought Thomas his father to Cape Town subsequently to that and Thomas passed away in Cape Town to my knowledge. David passed away in 2002.
David married my mother Eileen in 1970. My sister Penny was born 1971 and myself 1977.
My father David's sister married into the Moseley(?spelling) family and she had two children. She has also passed away. I believe they are still in the UK.
My mother Eileen Tillman is still alive and strong.
I have compiled the following from Elizabeth's books and your notes:
Patrick William Tillman - Born 1977 - Johannesburg
David William Tillman - Born 1920 - London (within the sound of the Bow Bells)
Thomas David Tillman - Born 1880 - London (within the sound of the Bow Bells)
Robert Tillman - Born 1848 - London (within the sound of the Bow Bells)
George Tillman - Born 1805 - London
Peter Tillman - Born 1780 - Lympstone
George Tillman - Born 1755(?) - Lympstone