Deirdre
Most folks of Irish descent around here (New England, USA) prounounce it Dare-dra. People usually tell me they love the name - I do if it is pronounced correctly :-). Family in Ireland pronounce it Deerdree, but I prefer Dare-dra. Some people tell me it is French or German!! The common nickname for Deirdre is Didi or Deedee, but I left that behind long ago. Enjoy your name however you want to pronounce it!