Which Tyrell son, heir to Highgarden, was omitted from Game of Thrones?

Willas Tyrell was the heir to Highgarden who was omitted from Game of Thrones. He is the eldest child of Mace Tyrell and Alerie Hightower and stands to inherit the Tyrell seat and the lordship of the Reach.

In the novels, Willas is intelligent, scholarly, and notably kind. He has a crippled leg after a jousting accident involving Oberyn Martell, but the injury does not prevent him from being an accomplished breeder of hawks, hounds, and horses. His reputation contrasts with the show’s more limited portrayal of the Tyrell family.

Willas briefly becomes important to Sansa Stark’s future when Olenna Tyrell plans to marry her to him and bring her to Highgarden. The Lannisters block that arrangement by forcing Sansa to marry Tyrion instead. Willas is often confused with Garlan or Loras, but Loras is the Knight of Flowers and Garlan is the family’s famed warrior; Willas is the eldest son and heir.