I have been reading the notes posted up on the forum about the Tisdall Brothers and all the relatives. My grandfather was one of the Brothers - Roy Tisdall. I also read that someone has traced a name to a Susan White, that is my mother and she is married to my Father Philip St Clair Tisdall.
I have many cousins, some of which live in America. The maiden name of my Aunt was Boot, she is now a Wood. The Woods are i think related to or have something to do with the Tisdall Family.
I know i also have some other cousins, also Tisdalls but i am not able to recall their names at the moment.
I hope this helps with some of the research you have been doing into the familly and the name. I can remember being told that the family is origanlly from Ireland, they owned a large estate- the Tisdall estate and i think it was in southern Ireland. This is all i can remember at the moment.
I would love to hear from someone, a distant or close relative