From A Wiki of Ice and Fire
Alester Tyrell as depicted in Game of Thrones: Histories & Lore.
|Book||The World of Ice & Fire (mentioned)|
Ser Alester Tyrell was an Andal knight and adventurer who founded House Tyrell.
Alester was among the many knights taken by House Gardener into their service and became the sworn shield of King Gwayne V Gardener, the last of the Three Sage Kings. His eldest son became a notable knight, only to die in a tourney. His second son, Gareth, was more bookish and never achieved knighthood, choosing to serve as a royal steward instead.
- ↑ 1.0 1.1 The World of Ice & Fire, The Reach: House Tyrell.