ClagueManx Shortened Anglicization of either Gaelic Mac Luathóg "son of Luathóg", itself derived from a diminutive of Gaelic luath, Manx leah "swift", or from Gaelic Mac Laoghóg "son of Laoghóg", which is derived from a diminutive of Gaelic laogh and Manx lheiy "calf".
CoventryEnglish habitational name from the city of Coventry in the West Midlands, which is probably named with the genitive case of an Old English personal name Cofa (compare Coveney) + Old English treow 'tree'.
CromptonEnglish Derived from the Old English word "Crometun"
CrumbleyEnglish Derived from the Old English word crump meaning "bent, crooked." Perhaps a name for a person with an abnormal spine. One notable person with this surname is evil doer Ethan Crumbley, who was a school shooter in Oxford High School in Michigan.
CurnowCornish Ethnic name for someone from Cornwall.
CusackIrish An Irish family name of Norman origin, originally from Cussac in Guienne (Aquitaine), France. The surname died out in England, but is common in Ireland, where it was imported at the time of the Norman invasion of Ireland in the 12th century.
DzagoevOssetian (Russified) Russified form of the Ossetian surname Зæгъойты (Zægoyty), which came from the nickname Dzagoy. The name was probably from Ossetian дзаг (dzag) meaning "full, complete", ultimately derived from Persian چاق (čâq) meaning "fat".