Florence Pugh's brother was on Game of Thrones

Entertainment Weekly

Turns out the Oscar-nominated Little Women star is the younger sister of Toby Sebastian, who appeared on Game of Thrones in six episodes as Trystane Martell, the eldest son and heir to Prince Doran Martell, who was engaged to Princess Myrcella Baratheon. Toby Sebastian was born Sebastian Toby M. Pugh.