Listen to Siún Ní Dhuibur online. Siún Ní Dhuibur is an English language song and is sung by Relativity. Siún Ní Dhuibur, from the album Fiona Ritchie Presents the Best of Thistle & Shamrock Volume 1, was released in the year 1999. The duration of the song is 4:19. Download English songs online from JioSaavn.