Many thanks! Would love to know about your Bird ancestors too. I have a case of photos which belonged to my grandmother, Jane Allen, nee Bird, which includes photos of some of the family including the Sydney Bird/'Una' who was a trapeze artist. I did have a wonderful coloured 18thc poster showing Una on the trapeze (star billing!) but unfortunately one of the family gave it away.
I'm really intrigued by JBG's double life - we had no idea!