Hi
Not sure if you are still researching this line, google brought me to this old thread.
I believe your great granddad Charles Percy Lott is my two times great uncle, his brother John William Lott (known as William when he was younger) is my great granddad (b.1885-d.1958).
I have more information on this line from my grandmother who knew Minnie, Alice and Emily.
Happy to help fill any gaps you might still have if you're still looking for answers.
Katherine