Costello
English
Etymology
Anglicized from Mac Oisdealbhaigh (“son of Oisdealbh or Hostilo)”), from Oisdealbh, Osdealv, Oistealb, Gaelic interpretation of Hostilo, a Norman name.
Proper noun
Costello
- Lua error in Module:names at line 633: dot= and nodot= are no longer supported in Template:surname because a trailing period is no longer added by default; if you want it, add it explicitly after the template of (deprecated template usage) [etyl] Irish origin.