Roald Dahl was born in 1916 in Wales. Dahl's parents were Norwegian, and Dahl was named after the Norwegian explorer Roald Amundsen. His first language was Norwegian, which he spoke at home with his parents and his sisters (Astri, Alfhild, Else, and Asta). In1920, when Dahl was three years old, his seven-year-old sister, Astri, died and weeks later, his father died too at the age of 57. However, Dahl's mother did not go back to Norway and stayed in Wales. It was because her husband Harald had wanted their children to be educated in British schools, which he considered the world's best. Dahl went to St. Peter's, a boarding school, but his time at St. Peter's was unpleasant. He was very homesick and unhappy. Dahl later wrote about his time at St. Peter's in his autobiography Boy: Tales of Childhood.