A moratorium is in effect on adding information from Fire and Blood until December 20th.
The World of Ice & Fire (mentioned)|
A Feast for Crows (appendix)
Archmaester Gallard is an archmaester at the Citadel in Oldtown. He is the author of Children of Summer, the chief source on the history of the Summer Isles in the Seven Kingdoms, which he wrote after translating the highly complicated, formal verses narrating Summer Islander history carved on the Talking Trees of Tall Trees Town.