Submitted NameRevisions Save Type Surname (from given name) Usage Irish Other Forms FormsÓ Ríordáin, Ó Ríoghbhárdáin Edit Status Status [show contributorshide contributors] Added 1/19/2018 by highexpectasians Edited 3/11/2020 by Infinitas Meaning & History From Irish Ó Ríoghbhárdáin meaning "descendant of Ríoghbhardán" (see Rórdán).