Passage: While stories of pig-faced women vary in detail, they have the same basic form. A pregnant noblewoman would be approached by a beggar accompanied by her children, and would dismiss the beggar, and in so doing would in some way compare the beggar's children to pigs. The beggar would curse the pregnant noblewoman, and come the birth of the child it would be a girl, healthy and perfectly formed in every respect other than having the face of a pig.The child would grow up healthy, but with some of the behaviours of a pig. She would eat from a silver trough, and speak only in grunts or with a grunting sound to her speech. The only child of her parents, she would stand to inherit a large fortune, but her parents would be concerned about what would become of her after their death. They would thus make arrangements either to find a man willing to marry her, or to use their fortune to endow a hospital on condition that the hospital take care of her for the remainder of her life.Although originating roughly simultaneously in Holland, England, and France, it was only in England, and later in Ireland, that the legend became well known and widely believed. In 1861 Charles Dickens remarked on the longevity of the belief in pig-faced women in England, commenting that "In every age, I suppose, there has been a pig-faced lady".

Question: are all the stories the same?
vary in detail, they have the same basic form