"The Retrial of Joan of Arc, also known as the \"nullification trial\", was a posthumous retrial of Joan of Arc authorized by Pope Callixtus III, at the request of Inquisitor-General Jean Brehal and Joan's mother Isabelle Rom\u00E9e. The aim of the trial was to investigate whether the trial of condemnation and its verdict had been handled justly and according to canon law. Investigations started in 1452, and a formal appeal followed in November, 1455. The final summary in June, 1456 described Joan as a martyr and implicated the late Pierre Cauchon with heresy for having convicted an innocent woman in pursuit of a secular vendetta. The court declared her innocence on 7 July 1456."@en . "The Retrial of Joan of Arc, also known as the \"nullification trial\", was a posthumous retrial of Joan of Arc authorized by Pope Callixtus III, at the request of Inquisitor-General Jean Brehal and Joan's mother Isabelle Rom\u00E9e. The aim of the trial was to investigate whether the trial of condemnation and its verdict had been handled justly and according to canon law. Investigations started in 1452, and a formal appeal followed in November, 1455. The final summary in June, 1456 described Joan as a martyr and implicated the late Pierre Cauchon with heresy for having convicted an innocent woman in pursuit of a secular vendetta. The court declared her innocence on 7 July 1456."@en . "Retrial of Joan of Arc"@en . . . . . .