Sion Goronwy was born in Bala, North Wales, and graduated with honours in History from the University of Wales, Aberystwyth. Subsequently he studied singing at postgraduate level at the Guildhall School of Music and Drama in London, gaining the LGSM diploma in 1998. He became the Legal and General Junior Fellow at the Royal College of Music after completing two years on the opera course at the Benjamin Britten International Opera School, studying with Graeme Broadbent. At the RCM he held the D'Oyle Cart Scholar (2002/03), Pidem Trust scholar (01/02) and supported by Cor Godre'r Aran (Welsh Male Voice Choir). During his studies at the Guildhall he was sponsored on scholarships from the National Eisteddfod of Wales, Arts Council of Wales, S4C television, and the Lawrence Attwell, Ryan Davies, William Cox, Dr Williams' School trust funds and Meibion Llywarch (Welsh folk choir).
Roles performed include – Puccini Il Tabarro (Talpa); Puccini Gianni Schicchi (Betto); Ponchielli La Gioconda (Alvise Badoero); Verdi Macbeth (Doctor/Herald/Servant); Stravinsky The Rakes Progress (Father Trulove); Janacek Jenufa (Dikoy); Mozart Die Zauberflöte (Sarastro), Stravinsky Oedipus Rex (Tiresias), Puccini Gianni Schicchi (Simone), Handel Agrippina (Claudio), Brockes Passion (Caiaphas/Centurion staged) and Britten Albert Herring (Supt Budd) A Midsummer Night's Dream (Snug/Lion, Quince); Puccini Madama Butterfly (Bonze); J Strauss Die Fledermaus (Frank): Tchaikovsky Eugene Onegin (Gremin / Zaretsky), Walton The Bear (Luka); Puccini Tosca (Sacristan); Peter Maxwell Davies The Martyrdom of St Magnus; Verdi Rigoletto (Sparafucile); Verdi Falstaff (Falstaff, Pistola), Strauss Ariadne auf Naxos (Truffaldine and Lakai); Mozart Die Entführung aus dem Serail (Osmin); Weber Der Freischutz (Kaspar and Eremit); Smetena The Bartered Bride (Micha); Menotti Amahl and the Night Visitors (Balthasar); scenes from Puccini La Boheme (Colline); Verdi Don Carlo (King Phillip), and Donizetti Anna Bolena (Enrico).
He has performed at the Benjamin Britten International Opera School; Royal Opera House; Glyndebourne Festival Opera; Glyndebourne Touring Opera; Welsh National Opera; Longborough Festival; Norfolk and Norwich Festival; Aix en Provence Festival; Lyon Opera; Norwegian Royal Opera at the Oslo Music Festival Norway; Opera Valladolid Spain; Clonter Opera; Mid Wales Opera; European Chamber Opera; Dartington International Summer School, British Youth Opera, English Touring Opera; Opera Box.
Concert work includes Verdi Requiem, Rossini Stabat Mater, Handel Messiah, Haydn The Creation, Scarlatti St Cecelia Mass; Mozart Requiem, Coronation Mass, Vesperae Solennes de Confessore. January 2005. He took part in concert tours of Australia and New Zealand during October 2003 and 1999 with Cor Godre’r Aran Male Voice Choir.
Sion makes his Royal Opera House debut this autumn in Shostakovich's The Nose. Recent engagements include performing the role of Quince in Stadttheater Klagenfurt’s production of A Midsummer Nights Dream, performing the role of Truffaldino in Ariadne auf Naxos and covering the roles of Banquo - Macbeth and Ferrando - Il Trovatore for Scottish Opera.