Dillon

Dillon is an English given name derived from the Irish surname Dillon, which was brought to Ireland by the Anglo-Norman de Leon family in the medieval period, the name itself ultimately tracing back to a place in Brittany or to the Old French personal name. It was long used as a hereditary family name among prominent Irish noble families before transitioning into common use as a given name. The spelling Dillon is sometimes used to distinguish it from Dylan, the Welsh name with which it is frequently confused despite having a separate origin. Dylan and Dillan are closely related variant spellings in modern use.