The Alessandro Mattei listed in the final branch of the family tree above, though sources suggests he undertook an ecclesiastic career, is not Alessandro Mattei (1744–1820). Ironically though, the latter Alessandro was also nephew to a Luigi Mattei; born in 1702 who later became a cardinal (not the military Luigi Mattei listed above).
The Alessandro Mattei in the final branch of the family tree above, though sources indicate he pursued a religious career, is not the same as Alessandro Mattei (1744–1820). Ironically, the latter Alessandro was also a nephew to a Luigi Mattei; born in 1702 who later became a cardinal (not the military Luigi Mattei listed above).