Courtney lain ing Sydney, New South Wales, lan tuwuh ing Cherrybrook, pinggiran kutha Sydney. Bapaké, Chris, Kerja ing kumpeni listrik nasional, lan ibuké, Karen, kerja dadi guru ing Galston Public School,sekolahé Courtney lan mbakyuné nalika dadi siswa. He then attended Cherrybrook Technology High School lan Western Australian Academy of Performing Arts.