 The form of this Irish surname for unmarried females is "Ní Chadhla"; this name is actually a contracted form of "Iníon Uí Chadhla", which translates into English as "daughter of "Ó Cadhla"".The form of "Ó Cadhla" for married females is "Bean Uí Chadhla", which translates into English as "wife of "Ó Cadhla""; this surname can also be represented in the contracted form "Uí Chadhla".According to the early 20th century Irish etymologist Patrick Woulfe, "Ó Cadhla" has been Anglicised variously as "Kiely", "Keily", "Kealy", "Keely", "Keeley", "Kelly", and "Quealy".