From A Wiki of Ice and Fire
|Alias||The Bastard of Uplands|
|Book||A Storm of Swords (mentioned)|
Blackshield participated as a mystery knight at a tourney held at Oldtown sometime between 278 AC and 281 AC. He was unhorsed by Barristan the Bold of the Kingsguard, who unmasked him and revealed him as the Bastard of Uplands.