Thomas Grey (constable)

Sir Thomas Grey of Heaton
Arms of Sir Thomas Grey of Heaton:- gules, a lion rampant and a bordure indented argent:[1] variation – a baton azure[2] Crest:- 1: Scaling Ladder 2: Rams Head[3]
Born	before 1382
Died	before March 1344
Allegiance	England
Service / branch	Army
Rank	Knight Banneret
Commands	Warden of Cupar Castle Keeper of Norham Castle Deputy Constable of Berwick-upon-Tweed Keeper of Mitford Castle
Battles / wars	Action at Lanark (1297) Siege of Stirling Castle (1304) Ambush at Cupar Castle (1308) Battle of Bannockburn (1314) Capture of Berwick (1318) Siege of Norham (1322) Invasion of England (1326)
Spouse(s)	Agnes de Bayles
Relations	Thomas Grey (chronicler)

Sir Thomas Grey (d. before March 1344) of Heaton Castle in the parish of Cornhill-on-Tweed, Northumberland, was a soldier who served throughout the wars of Scottish Independence. His experiences were recorded by his son Thomas Grey in his chronicles, and provide a rare picture of the day-to-day realities of the wars.

His career, blemished by his suicidal charge at the Battle of Bannockburn, a contributing factor to the devastating English defeat, is perhaps best known for his role in the tale of Sir William Marmion, the chivalric knight of Norham Castle.