Hi Rory!!
I hope you don't mind me reaching out, but I just had to! I am in the midst of doing family research for a friend of mine and stumbled upon your forum posts.
They are the grandaughter of Frank Davenport & Flora Van Zuilecom so would also be the grand neice of Arthur & Hugh van Zuilecom!
Frank & Flora had two sons David & Henry. My friend is the last surviving child of Henry and his wife Daphe Ironside.
I hope that I am not misunderstanding that you are in possession of Frank's medal? If that is the case I would be very interested in buying it from you please, presumably you can also supply the proof that it belongs to him?
Apologies if I have misunderstood your post and this is not an option, but I had to ask the question on their behalf!
Regards
Andre