Family name origins & meanings
- Northern Irish : shortened Anglicized form of Gaelic Ó Mealláin ‘descendant of Meallán’, a personal name that is a diminutive of meall ‘pleasant’.
- English (of Norman origin) : habitational name from Meulan in Seine-et-Oise.
- Dutch (van Mellon) : habitational name from Millun bij Keulen.
- Thomas and Sarah Jane Mellon came to Pittsburgh, PA, from Lower Castletown, Tyrone, Ireland, in 1818. Their grandson, the industrialist and financier Andrew William Mellon (1855–1937) is remembered not only as a businessman but also as an art collector. He served as secretary of the Treasury from 1921 to 1932.