Costello (surname) to a Gaelic translation of Jocelyn, Jocelyn d'Angulo's given name. In fact, MacOisdealbhaigh is the Gaelic translation of his brother Hostilo (or Hostilio) d'Angulo's first name. Oisdealbh is a much more obvious translation of Hostilo. It is Hostilo's descendants who would bear the surname Mac Oisdealbhaigh (son of Oisdealbh or Hostilo). The surname would later be anglicized to Costello, Costelloe, and Costellow. Gilbert d'Angulo is also sometimes listed as the son of Jocelyn d'Angulo in error. Gilbert d'Angulo is the father of both Jocelyn and Hostilo. It occasionally has been adopted as a pseudonym or stage name by famous people
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