Thursday's Child is a children's historical novel by Noel Streatfeild, set in turn-of-the-century England.
The title of the novel and its sequel are taken from the traditional rhyme "Monday's Child".
Margaret soon becomes the archenemy of the cruel matron at St. Luke's, where she is sent by well-meaning people when she is ten.
Things reach such a dreadful state that she decides to run away from the orphanage, taking along her friends Peter and Horatio and her "three of everything".
So the children flee in the night to become the unlikeliest leggers ever seen on a canal boat and performers in a travelling theatrical troupe.