Mac Amhalghaidh variant forms of the name. A modern variant is Mac Amhalaí. Another is Mac Amhalaidh. Another variant is Mac Amhalghadha. Variant forms of "Mac Amhalghaidh" and "Mac Amhalghadha" include Mag Amhalghaidh and Mag Amhalghadha. "Mac Amhalghaidh" translates into English as "son of "Amhalghaidh"", or "son of "Amhalghadh"". The surname originated as a patronym, however it no longer refers to the actual name of the bearer's father. The personal name "Amhalghaidh", also spelt "Amhalghadh", is an old Gaelic name, and is of uncertain origin and meaning. "Mac Amhalghaidh" is a masculine surname. The form of this surname for unmarried females is
Orr (surname) name is from a topographical name for a person who lived on a shore, or ridge. This name is derived from the Old English "ora", meaning "shore", "hill-slope", "flat-topped ridge". The name could also be derived from a place-name, derived from this Old English word; for example, the surname "Ore" is derived from Oare, in Berkshire, Kent; and Wiltshire; or Ore, in East Sussex. Padraig Mac Giolla Domhnaigh, suggested that the Irish surname originates from an Anglicisation of Gaelic "Mac Iomhaire". Mac Giolla Domhnaigh stated that this was an old name from Renfrewshire, and a sept of the Campbells; he