Silas Heap is a seventh son of Ben Heap, a talented shape-shifter, yet he himself is a not-so-competent Ordinary Wizard who lives in The Castle. He is married to Sarah Heap and is the father of Septimus Heap, Jojo, Nicko, Edd, Erik, Sam and Simon Heap. He is also the adoptive father of Jenna Heap. Silas was born the day that DomDaniel fell off the roof of the Wizard Tower. He was apprenticed to Alther Mella, but asked Alther to annul his apprenticeship so that he could live with Sarah Heap. Silas lived in The Ramblings until Jenna discovered that she was the Princess and went to live in the Palace .