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Ledger was born in Perth, Western Australia, the son of Sally Ledger (née Ramshaw), a French teacher, and Kim Ledger, a racing car driver and mining engineer whose family established and owned the Ledger Engineering Foundry. The Sir Frank Ledger Charitable Trust is named after his great-grandfather. He had English, Irish, and Scottish ancestry. Ledger attended Mary's Mount Primary School in Gooseberry Hill, and later Guildford Grammar School, where he had his first acting experiences, starring in a school production as Peter Pan at the age of 13. His parents separated when he was 10 and divorced when he was 11. Ledger's older sister Kate, an actress and later a publicist, to whom he was very close, inspired his acting on stage, and his love of Gene Kelly inspired his successful choreography, leading to Guildford Grammar's 60-member team's "first all-boy victory" at the Rock Eisteddfod Challenge. Ledger's two half-sisters are Ashleigh Bell (b. 1990), his mother's daughter with her second husband and his stepfather Roger Bell, and Olivia Ledger (b. 1996), his father's daughter with second wife and his stepmother Emma Brown.