FamilyEducation.com
   
 

Last name origins & meanings:

  1. Irish: reduced Anglicized form of Gaelic Mag Fhionnbhairr ‘son of Fionnbharr’, a personal name composed of fionn ‘fair’, ‘white’ + barr ‘top’, ‘head’.
  2. Welsh and English: from the female personal name Gaenor (a form of Welsh Gwenhwyfar, a compound of gwen ‘fair’, ‘white’ + (g)wyf ‘smooth’, ‘yielding’ + fawr ‘large’. This was the name of King Arthur’s queen Guinevere).