Ibsen believed Per Gynt, the Norwegian fairy tale on which the play is loosely based, to be rooted in fact, and several of the characters are modelled after Ibsen's own family, notably his parents Knud Ibsen and Marichen Altenburg. He was also generally inspired by Peter Christen Asbjørnsen's collection of Norwegian fairy tales, published in 1845 (Huldre-Eventyr og Folkesagn). (also from Wiki) It is a magical play, but has to be adapted for modern performance. I think it could make a wonderful series of films.