Hi Ivan, we're trying to demonstrate how OSM can link to cultural resources, which are of great importance to the endangered language and culture of Wales. Having a full link makes it a LOT easier for creating the demo uMaps to advocate for the project, but I recognise that the punctuation corrupts the URL. Presumably this is why apps struggle with it, and we can't and shouldn't change the titles to suit, as that would corrupt our language! Thanks for your help on this. We will follow the guidance, but wanted to explain what we are doing. Also, we are working with wikimedia in Wales on this. We shall also add "historical image" to media, in order to make that clearer.