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
Scottish Gaelic name MacKonochie, MacOnachie, MacOnechy, MacOnochie, Donohue" or "Donohoe" (ignoring the Mac/Mc variation). Note that Scottish Gaelic does not put a space between the and the second element, whereas in Irish, there is a space: Nicknames (, ) in Gaelic operate similarly to those in other languages and usually indicate a physical characteristic, an occupation, a location or an incident the person is associated and so forth. Some examples Due to the relative paucity of names and surnames in Gaelic, the official name of a person (i.e. first name plus a surname, in Gaelic or English) is rarely used in Gaelic speaking