Raised in Carmarthenshire and a former Ysgol Bro Myrddin pupil, Ken won his first Welsh cap against Namibia in the 2011 Rugby World Cup.
Ar ôl cael ei fagu yn Sir Gaerfyrddin a mynychu Ysgol Bro Myrddin, enillodd Ken ei gap cyntaf dros Gymru yn erbyn Namibia yng Nghwpan Rygbi'r Byd 2011.