Hi Sandra, Hi Phil
I know this thread has been inactive for a while. I am researching the Bothwick line, and you may have come across this since your last post.....so here goes!
Henry George Bothwick b 1911 marries a Violet Saward in Islington 1936 vol 1b page 336.
So far I am trying to track down if they had any children, if you have anything please let me know!