 26 years of detention by 1705 rather than the 31 years mentioned.However, based on the ""very thick black frizzy hair"," this may be the Mooress of Moret, born of adultery between Maria Theresa of Spain (the wife of Louis XIV) and a black slave, whom Pagnol never mentions in his essay.Voltaire was imprisoned at the Bastille from May 1717 to April 1718, i.e.