Lliwen Glwys, from Machynlleth, made her first appearance as part of the Cyw team during a singing and dancing session on the main stage at the National Eisteddfod in Garreg Las on Thursday, August 6. Lliwen Glwys, from Machynlleth in Powys, who has been unveiled as the latest presenter to join S4C's Cyw team. New Cyw presenter Lliwen Glwys, from Machynlleth, Powys, (third from left) with the Cyw team and characters at the National Eisteddfod in Garreg Las. Despite her extensive performing experience, Lliwen admitted making her Cyw debut at the National Eisteddfod was a special moment. "I'm counting down the days until I can join the team and welcome the young children of Wales into the World of Cyw."