Please don't apologise, I am delighted that you have the same questions as I do.
Though, I had not registered
"as if they were my own" in the same way, I was thinking he meant "as if they were my own
children.
I've checked back and Louisa was baptised at St. Annes, Soho on 18 Dec 1816 which was where Frederick and Mary married in 1814. She died a spinster.
Henrietta, Henry and Mary were all baptised together on 11 Oct 1826 at St. Mary, Bryanstone Square.
But that is not to say that one or more was not Frederick's children.
The other questions, I just don't know or know how to find out.
I have a note on a scrap of paper of a case argued and determined in Kings Bench in the 52nd year of George III, Weeks v Mailardet.
I do know that Henry travelled around exhibiting his automations and did spend time in Dublin but I don't have any dates for his Irish exhibitions.
It just seems quite sad that his descendants ended up in the slums and workhouses of London. I doubt Henry would have ever imagined that would happen.
Thank you Huncamunca, I'll try to delve further
,