Joseph Delaville-Le Roulx

Joseph-Marie-Antoine Delaville Le Roulx (15 August 1855 – 4 November 1911) was a French historian whose speciality was the Knights Hospitaller (Order of the Knights of St. John of Jerusalem). He was a knight of the Sovereign Military Order of Malta.

Biography Joseph Delaville Le Roulx was the great-great-grandson of French shipowner, merchant and politician Joseph Delaville Le Roulx (1747–1803) and studied at the Lycée Condorcet. He entered the École des Chartes in 1874 and graduated in January 1878, third in a class of ten, three of whom were members of the Institut de France. Born into a family originally from Touraine, he wrote his undergraduate thesis entitled l'Administration de Tours sous le gouvernement des élus (1356–1462) (The Administration of Tours under the Government of the Elected). He had a degree in law and a Doctorate in Letters from the Sorbonne. He attended the conferences of the École des Hautes-Études where he presented a study on the Viscounty of Turenne.

During this period, he published two volumes on La France en Orient au XIVe siècle which he presented as a thesis for his doctorate in letters, published in 1886. He presented a Latin thesis on the origin of the Hospitaller order, De prima origine Hospitalariorum Hierosolymitanorum, published in 1885. He also wrote 18 dissertations on the Order of St. John of Jerusalem, published in 1910 under the title Mélanges sur l'Ordre de saint-Jean-Jérusalem. Les Hospitaliers à Rhodes, 1310–1421 (1874). Documents concernant les Templiers extraits des archives de Malte (1882). Les archives la bibliothèque et le trésor de l'Ordre de Saint-Jean de Jérusalem à Malte (1883). The archives the library and treasury of the Order of the Knights of St. John of Jerusalem in Malta. La France en Orient au xive siècle: expéditions du maréchal Boucicaut. (1885). An account of the travels of French marshal Jean II Le Maingre (1366–1421), known as Boucicaut, a knight renown for his martial skills and chivalry. He was the leader of the 1399 crusade aimed at relieving Constantinople from its 1394-1402 blockade at the hands of the Turks. Cartulaire général de l'Ordre des Hospitaliers, 4 volumes (1894-1904). Collection edited by le Roulx that consists of various charters and documents of the Order of the Knights of St. John of Jerusalem which are numbered and organized chronologically from 1100 to 1310. Les Hospitaliers en Terre sainte et à Chypre (1100–1319) (1904). Les Hospitaliers à Rhodes jusqu'à la mort de Philibert de Naillac (1310–1421) (1913).