sentences:  He came to live with relatives in Stockholm in 1675 at the age of twelve, after having orphaned himself by having his widowed mother Karin Nilsdotter Griis executed, claiming she had abducted him to the sabbath of Satan in Blockula (Blåkulla) where she had molested him sexually.In Stockholm, he became known as the crown witness from Gävle and everyone wanted to hear about his visits to Blockula.He told them many stories about the sabbath of Satan, each more fantastic and exciting than the last, and gathered more and more people around him, including adults, and was soon a real celebrity and regarded as an expert on witches and sorcery.