What is william byron sister?

William Byron's sister is Claire Byron. She is a talented swimmer who has competed at a high level in the sport. Claire has been a supportive and encouraging presence in her brother's racing career, often attending his races and showing her support for his accomplishments. She has also been active on social media, sharing updates and photos of her brother's racing endeavors with her followers. Overall, Claire has been a positive influence in William Byron's life and career, showing her love and support for him both on and off the track.