Gethin Anthony was born in Stratford-Upon-Avon to Welsh parents and grew up in the UK and USA. He trained in acting at LAMDA, after graduating from Oxford University with a degree in English Literature and Language.
Soon after completing his training Gethin featured as the ill-fated Renly Baratheon in Game of Thrones and led a company at the RSC.
He has worked on both stage and screen throughout his career.
He received a Scholarship to the British American Drama Academy in
London, England from July to August 2004 where he attended workshops
with Fiona Shaw, Alan Rickman, and Brian Cox.
Gethin studied English Literature at Oxford University's Balliol College and was President of the Oxford University Drama Society, before training at London Academy of Music and Dramatic Art.
Although he plays notorious cult leader Charles Manson in ''Aquarius (2015-2016)'', he is about eight inches taller than Manson is in real life.