Garlan Tyrell

Willas Tyrell, is an unseen character in Game of Thrones.

Willas Tyrell is the second son of Mace Tyrell and Alerie Tyrell. Mace is the Lord of Highgarden and head of House Tyrell. He has two brothers Willas and Loras and one sister Margaery.

In the books
In the Song of Ice and Fire novels, his family remains the same.