Thanks for the invite. I've been looking through your Jee Family tree. They are an interesting family.
I agree you probably have the wrong Joseph Jee. I see from your tree that this Joseph died in 1899. But I think that your Joseph must have died in the mid 1850s. That would allow his wife Jane to marry William Deacon prior to Lily's birth in 1858. Divorce was uncommon in 19th century England.
Good luck in your research!!