Sick maester

A sick maester is an unnamed character in the seventh season. He is played by guest star Eamonn Draper and debuts in "Dragonstone".

Season 7
The maester's age and illness rendered him incontinent, and Samwell Tarly was tasked with emptying and cleaning his bedpan. Upon his failure to obtain permission from Archmaester Ebrose to enter the restricted area of the Citadel's library, Samwell took the maester's keys and entered the restricted area, taking several books including "Legends of the Long Night".