Benjamin Heap is the brother of Theo and Zelda Heap, the husband of Jenna Crackle, the father of Alfred, Hengist, Louis, Ernold, Edmond, Garth and Silas, the father-in-law of Sarah Willow and the grandfather of Simon, Sam, Edd, Erik, Jo-jo, Nicko, Septimus and Jenna. He is called Grandpa Benji.