Hi Monica,
As you can see I'm new to rootschat and haven't found my way about yet - it was as a result of finding this post that I joined. Thank you for directing me to the history. I have just speed-read everything and found it really interesting. What is funny (and new to me) is actually having a human link to many aspects. I'm usually the one making the suppositions and guessing! What I mean is the house 22 Gilmore Place in Edinburgh was my grandmother's house so I know it well - it was a second home to me. At first she shared with Jack and Gertrude (to the best of my knowledge referred to as Gertie in the family). This house is a stone's throw from the King's Theatre, also mentioned. Reading the posts, I suddenly remembered something I'd completely forgotten about. My grandmother (Jack's sister) had a special whistle which as a child I was told to listen for if I ever got lost while going out with her.It was "our" family whistle, and was based on something that Jack had to sing in one of the productions.
It was also interesting to note that one of Jessie's daughter's husband went off to Canada - that was my grandfather!
Looking forward to more on this subject when RedMystic gets back

Thanks once again for pointing me in the right direction!
Andrew