The reason for your naming problems is you are using label, that uses the folder's filename, if you want the same text then name your folder Fornlämningar. The other option is to change the caption template back to it's default and let it use the title field.
Always the safest option. Give your folders simple names - no spaces, no punctuation, no diacriticals. Use the folder title field to enter the readable text that you want to have displayed in the album. See screenshot.