Grennan was a character trained by Ser Alliser Thorne.
Origin & End
Died
301 AC—Castle Black, the Wall—Castle Black's courtyard
Affiliations
Affiliations
Night's Watch
Relationships
Trained by
Ser Alliser Thorne
Parent of
none
Abilities & Equipment
Weapons
LongclawNone explicitly mentioneddragonglasswields a weapon in each handknifeunspecified
Other
Performers
Mark Stanley
Cause of death
killed in battle
Appearances
22 episodesA Feast for CrowsGame of Thrones Season 3Game of Thrones Season 8Game of Thrones Season 4Game of Thrones Season 1A Game of ThronesA Dance with DragonsA Storm of SwordsGame of Thrones Season 2