Older brother of Paul Alday, with whom he is often confused. Their father (b.1737, first name unknown) was also a musician. François had 4 sons who were professors of music; Auguste, Philibert, Joseph and Francisque Alday (Ferdinand was a grandson) - attributing works to members of the Alday family is difficult since the sons all went under the name of Alday fils, and full names were rarely used in publications.