Barbro Alving, a well reputed Swedish journalist and writer (her signature was Bang), was a friend of princess Sibylla, and she also said some time that Sibylla had a rather unusual sense of humour. However, I don't think it was ever popular to "hunt her down", and quite certainly, princess Sibylla was impopular long before the 60's. Who was the now famous Swedish artist? I'd like to know, as I've never heard of that story.