Jon L. Lellenberg is the representative of Conan Doyle Estate Ltd, successor to the estate of Sir Arthur Conan Doyle's daughter and heir, Dame Jean Conan Doyle. He is one of the editors of Arthur C...ver maisJon L. Lellenberg is the representative of Conan Doyle Estate Ltd, successor to the estate of Sir Arthur Conan Doyle's daughter and heir, Dame Jean Conan Doyle. He is one of the editors of Arthur Conan Doyle: A Life in Letters.ver menos