Rowling's sister Dianne was born at their home when Rowling was 23 months old. The family moved to the nearby village Winterbourne when Rowling was four. She attended St Michael's Primary School, a school founded by abolitionist William Wilberforce and education reformer Hannah More. Her headmaster at St Michael's, Alfred Dunn, has been suggested as the inspiration for the Harry Potter headmaster Albus Dumbledore.