There seem to be a number of Marionis in NE Scotland, and I’ll definitely get in touch to see if there could be any connection with Charlie.
A few speculative thoughts;
The Marionis I’ve looked at all seem to be of Italian origin whereas accounts refer to Charlie being French, and leaving to return to France. However one reference mentions that he was evasive about his origins so could he have found it convenient to adopt a French identity to throw people off the scent for some reason?
However his nationality would have been confirmed when registering as as alien, originally it seems in Pembrokeshire and presumably the Sheriff’s court in Banff would have demanded proof as part of the case against him so it’s difficult to see how agreeing to be French could have benefited him if in fact he was Italian.
I’ve contacted Pembrokeshire archives to see if there is any record of his registration. While hoping for a positive result, sorry to say I think it a very long shot that such a record has survived.
Last a curious coincidence which I stumbled on while googling ‘Charlie Sunnyside’ (the beach where he had his cabin and gardens). In 1919 Charlie Chaplin made a short silent film called ‘Sunnyside’. Probably my overactive imagination but it set me thinking when he first set up his home on that beach around 1920 did a local gave him a nickname ‘Charlie’ which stuck?
Looking forward to hearing from Pembrokeshire archives, I’ll post their reply.