Seiriol Davies is a writer, composer and performer from Anglesey. As well as How to Win Against History, Seiriol has written shows including Milky Peaks (Theatr Clwyd and touring), Betty! A Sort of Musical with Maxine Peake (Manchester Royal Exchange) and Branwen:Dadeni for the Donald Gordon Theatre, Wales Millennium Centre (as co-writer). They have also created work with companies such as Punchdrunk, English National Opera, The Gate Theatre, Underbling & Vow, The Unicorn Theatre and Le Gateau Chocolat. Currently, Seiriol is developing a musical with Hijinx, a queer medieval Shakespearian epic about Henry the Fifth and Welsh folk hero Owain Glyndwr, entitled Sweet Henry Vee with the Birmingham Rep, and Charles Actual Dickens and the Death Ship of Gold with Francesca Moody Productions.