Linda’s brother, two years younger than her. The siblings are very close; when he’s bullied by the Flints’ sons, around his age, he always comes to Linda for comfort and advice. Later, after Linda runs away, Dr. Flint jails William along with Ellen and Benny, and he takes good care of the children. After being bought by Mr. Sands, William accompanies his new master on trips to the North, where he seizes the opportunity to run away. Leaving a note expressing his refusal to purchase the freedom to which he is already entitled, he shows his strong character and deep sense of justice. Later, he reunites with Linda and her children in New York and helps support the family.