Costello

Costello
Gender Unisex
Language(s) English
Origin
Language(s) Irish
Word/Name Mac Oisdealbhaigh
Meaning "son of Oisdealbhach"
Other names
Cognate(s) Mac Oisdealbh
See also Mac Coisteala

Costello is a surname in the English language. The name is an Anglicised form of the Irish Mac Oisdealbhaigh, meaning "son of Oisdealbhach". The Irish Oisdealbhach is derived from two elements: the first, os, means "deer"; the second element, dealbhach, means "in the form of", "resembling".[1] The surname Costello can also be rendered in Irish as Mac Coisteala.[2]

The surname has been borne by a notable Irish family who claimed descent from Jocelyn de Angulo (fl. 1172), an Anglo-Norman knight. The family first appears on record in Ireland in 1193, known as the sons of Oistealb. This particular Oistealb was the son of Gilbert de Nangle, and from him the family's Irish surnames Mac Oisdealbh and Mac Oisdealbhaigh are derived. The family has also been given the Irish surname Mac Goisdelbh, in reference to the founder Jocelyn.[3] The barony of Costello in east Mayo is named from this family.

In the early 20th century, Patrick Woulfe gave a differing etymology. Woulfe stated that the Irish Mac Oisdealbh, was derived from the personal name Oisdealbh. According to Woulfe, this personal name is composed of elements meaning "Os-shaped" or "shaped like the god Os". Woulfe variants of the surname were Mac Goisdealbh, Mac Goisdealbhaigh and Mac Coistealbhaigh.[4]

Contents

People with the surname

Fictional people with the surname

See also

References

  1. ^ Learn about the family history of your surname, Ancestry.com, http://www.ancestry.com/learn/facts/default.aspx?, retrieved 17 December 2010  which cited: Dictionary of American Family Names, Oxford University Press, ISBN 0-19-508137-4  for the surname "Costello".
  2. ^ Irish Ancestors, Irishtimes.com (www.irishtimes.com), http://www.irishtimes.com/ancestor/surname/, retrieved 17 December 2010  which cited: MacLysaght, Edward (1980), Irish Families, Dublin  for the surname "Costello".
  3. ^ MacLysaght, Edward (1972), Irish Families: Their Names, Arms and Origins, New York: Crown Publishers, pp. 94–95 
  4. ^ Mac Oisdealbh, Library Ireland (www.libraryireland.com), http://www.libraryireland.com/names/maco/mac-oisdealbh-mac-oisdealbhaigh.php, retrieved 17 December 2010  which is a transcription of: Woulfe, Patrick (1923), Irish Names and Surnames