Roald Dahl on 13 September is celebrated as "Roald Dahl Day" in Africa, the United Kingdom and Latin America. In honour of Dahl, the Royal Gibraltar Post Office issued a set of four stamps in 2010 featuring Quentin Blake's original illustrations for four of the children's books written by Dahl during his long career; "The BFG", "The Twits", "Charlie and the Chocolate Factory", and "Matilda". A set of six stamps was issued by Royal Mail in 2012, featuring Blake's illustrations for "Charlie and the Chocolate Factory", "The Twits", "The Witches", "Matilda", "Fantastic Mr Fox", and "James and the Giant Peach". Dahl's influence
Roald Dahl language was Norwegian, which he spoke at home with his parents and his sisters Astri, Alfhild and Else. Dahl and his sisters were raised in the Lutheran faith, and were baptised at the Norwegian Church, Cardiff, where their parents worshipped. In 1920, when Dahl was three years old, his seven-year-old sister, Astri, died from appendicitis. Weeks later, his father died of pneumonia at the age of 57. With the option of returning to Norway to live with relatives, Dahl's mother decided to remain in Wales. Her husband Harald had wanted their children to be educated in British schools, which he