Michel Ferdinand d'Albert d'Ailly [SEP] father
Michel Ferdinand d'Albert d'Ailly
Michel Ferdinand d'Albert d'Ailly (31 December 1714 – 23 September 1769), Duke of Picquigny and then Duke of Chaulnes from 1744, was a French astronomer, physicist and freemason.
Biography.
The son of Louis Auguste d'Albert d'Ailly (1676–1744), the Duke of Chaulnes, Michel Ferdinand d'Albert d'Ailly commanded the light cavalry of the "Maison du Roi" (). In 1750 he became the king's commissioner to the Estates of Brittany and persuaded the assembly to accept the Vingtième tax.
Louis Joseph d'Albert d'Ailly
Louis Joseph d'Albert d'Ailly (1741–1792), seventh Duke of Chaulnes and son of Michel Ferdinand d'Albert d'Ailly, was a chemist and French aristocrat.
Biography.
At the death of his father in 1769, Louis Joseph inherited the title of Duke of Picquigny. He studied science successfully and in 1764 was elected a Fellow of the Royal Society in London.
He retired from military service at the age of twenty-four with the simple rank of colonel and instead undertook the study of natural sciences