Thank you, Darwin

I've checked the sites there, that were new to me, also to no avail

I am still waiting for answers to a few requests I've send ... the Tasmanian archive replied, that they are on holidays at the moment

I doubt, that I will find much more information, so my report about the medium's findings will probably be without research results.... which is bugging me

, although the results wouldn't have counted as proof in anyway.
I just feel sorry for the medium... she is a lovely person and it would have been nice to be able to give her some confirmation.
Should any of the requests, that I've send, show results, I will update you, of course.
Thank you all for your help in this case.

GPS Hella