The surname Byrn was "O Broin," in its Gaelic form, which means descendant of Bran.
Irish Surname - Byrne. Usually recorded as Byrne, and sometimes as O'Byrne, this is a variant of the Irish 'Ó'Broin', meaning descendants of/from Branach or Bran, meaning "raven". The Byrne or O'Byrne (Ó Broin) family originally came from Kildare claiming descent from Bran, the king of Leinster, who died in 1052.
English Meaning: The name Myrtle is an English baby name. In English the meaning of the name Myrtle is: A flowering shrub.
Anglo-Saxon Meaning: The name Bysen is an Anglo-Saxon baby name. In Anglo-Saxon the meaning of the name Bysen is: Unique.