Event: Olenna Redwyne (Grandma Tyrell) - Death (Deaths)

Episode 5: Eastwatch at 12:57
12:57 (+10) Olenna Redwyne (Grandma Tyrell):
Jaime confirms the death of Olenna Tyrell from the poisoned wine she takes after the Tyrell defeat at Highgarden. "It was Olenna. She confessed before she died." (Death)