Welcome to our Jack Gleeson Page. Jack Gleeson is a 22 year old Irish actor who is from Cork in The Republic of Ireland. Jack Gleeson plays or played rather the vile, evil and horrid child Joffrey of what he believes is Cersei Lannister and Robert Baratheon. However we, the audience know that he is a child out of an incestuous relationship with Cersei and Jamie Lannister. What is truly inspiring and great of Jack Gleeson is that at such a young age he could transform from a wonderful guy into the vile character which I’m sure at one time or another we wanted to punch him in the face.