Jean Marie du Lau d'Allemans

Jean-Marie du Lau d'Allemans (30 October 1738, Biras – 2 September 1792, Paris) was the last Archbishop of Arles, and was one of the Catholic Martyrs of September 1792, killed in the course of the September Massacres which occurred during the French Revolution. He was beatified on 17 October 1926 by Pope Pius XI.

Lau was born on 30 October 1738 at the Château de la Côte at Biras, then in the Province of Perigord, of an aristocratic family which had provided many members into the higher ranks of the clergy. His father was Armand du Lau, Lord of La Coste, and his mother Françoise de Salleton.

After studies at the Collège de Navarre, Lau gained a Licentiate of Theology at the Sorbonne and then embarked on his ecclesiastical career, aided by his uncle, the Abbé Jean du Lau, parish priest of the Church of Saint-Sulpice in Paris since 1750. As was the system, he passed from one diocese to another in a rising curve of authority and prestige: canon and treasurer at Pamiers, Vicar General of the Diocese of Bordeaux, Prior of Gabillon and in 1770 attained the notable rank of . On 1 October 1775, he was promoted by King Louis XVI to the office of Archbishop of Arles, the youngest of the king's episcopal appointments.

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