Before the "Harry Potter" chronology starts – when the character Lord Voldemort declared war on the wizarding world – Albus Dumbledore, headmaster of Hogwarts School of Witchcraft and Wizardry and an upstanding and powerful citizen of the wizarding world, attempted to take control of the situation by founding the Order of the Phoenix. Several characters joined the organisation, seeking to prevent Voldemort from taking over the wizarding world and establishing a tyrannical new world order. During this period, before the events of the "Harry Potter and the Philosopher's Stone", the Order sustained heavy losses, including the murders of minor characters such as the Prewetts, the Bones and the McKinnons. The Longbottoms were also tortured to insanity at the hands of Bellatrix Lestrange.