Casting Season 4: Mace Tyrell 

Mace Tyrell is the Lord of Highgarden, the head of House Tyrell and father to Loras and Margaery and the son of the Queen of Thorns, Olenna Tyrell.
parole chiavi: Game of Thrones, casting, season 4, brendan gleeson, brian cox, hugh bonneville, jim broadbent, mace tyrell