France and names it after himself as the Alphonse Atoll. The next day, he claims and names the St. François Atoll. July–September July 8 – 1730 Valparaíso earthquake: An earthquake with an estimated magnitude of 9.1 strikes Valparaíso, in modern-day Chile but at this time in the Viceroyalty of Peru. July 12 – The papal conclave selects Cardinal Lorenzo Corsini over Cardinal Pietro Marcellino Corradini as the successor to Pope Benedict XIII. Corsini becomes Pope Clement XII as the 246th pope. August 4 – Maria Madlener becomes the last person to be executed after the Galgeninsel witch trials in Bavaria, and is beheaded by sword. August 5 – Prince Frederick of Prussia, the eldest son of King Frederick William and a high-ranking officer, attempts to flee to England after deserting the Prussian Army and is captured along with his fellow officer Hans Hermann von Katte. Katte is executed, and Crown Prince Frederick is imprisoned at Küstrin (modern-day Kostrzyn nad Odrą in Poland) for a year before being forgiven by his father. Prince Frederick later succeeds his father as King and will be remembered as Frederick the Great. August 12 – General Nader Khan of Persia captures Tabriz from the Ottoman Empire, bringing an end to the Western Persia Campaign, the first major action in the Ottoman–Persian War (1730–1735). Tabriz becomes a permanent part of Iran. Nader leaves the city four days later to begin the Herat Campaign of 1731. August 25 – French Protestant Marie Durand is imprisoned in the Tower of Constance at Aigues-Mortes for her defiance of the Roman Catholic government, and is kept captive for the next 38 years. During her incarceration, she continues to resist converting to Catholicism as a condition of release. She is finally set free on April 14, 1768 and lives 8 more years. September 1 – A volcano erupts on Lanzarote, the easternmost of the Canary Islands and threatens the Spanish inhabitants. On Gran Canaria, the regent of the islands reports to Madrid that the flames are visible even from away. September 17 – Mahmud I (d. 1754) succeeds Ahmed III (ruled since 1703) as Ottoman Emperor. October–December October 22 – Construction of the Ladoga Canal, linking the Neva and Svir Rivers, one of the first major navigable canals constructed in Russia, is completed. November 6 – After being convicted of treason for attempting to desert the Prussian Army with Crown Prince