The Heap family is an ancient Wizard tribe whose current generations live in The Castle. They are notable of being the main characters in the Septimus Heap series, and their seventh son, Septimus Heap, is the protagonist of each book sometimes along with his adopted sister, Jenna Heap (the Princess). The father of the family is Silas Heap, whose wife and mother of his children is Sarah Heap. Their seven sons are Simon, Sam, twins Edd and Erik, Jo-jo, Nicko and Septimus. The family also adopted Jenna Heap.