Hello Jane,
I am a Great x 2 grand daughter of Willam Percy , Henry Cork's Brother. My mum met both kate and Harry as a child in Singapore.
We have photo's of them.
I believe when Kate died, Harry returned to Singapore and lived with another lady .If Int. I will get more info,
The Cork line is being re traced by Pete whom i see you have been in contact with and now Darren.
Would love to see what notes you have.
Thanks Genevieve