Mahaffy
Mahaffy is a surname of Scottish origin, and is an Anglicisation of the Gaelic name Mac Dhuibhshithe. It is a sept of Clan Macfie in Scotland, but the clan originated in Ireland. There the name is found largely in County Donegal, Ulster. People with the surname Mahaffy include: 
 Arthur Arnold Mahaffy (1861–1947), Canadian politician
 James Mahaffy (1905–1986), Canadian politician
 John Mahaffy (ice hockey) (1918–2015), Canadian hockey player 
 John Pentland Mahaffy (1839–1919), Irish academic
 Leslie Mahaffy (1976–1991), Canadian murder victim

See also
 Mahaffey, a variant of the surname

References