An orphan, he lives with his Great-Uncle Bernard and [Great-Aunt Dot]? - although in practice his relatives contrive to have him living with them as little as possible, sending him to boarding school and arranging various away-from-home activities during the holidays. When he is at home, he also has to contend with Cousin Ronald, son of Bernard and Dot, Astrid, Ronald's wife, and [Mrs Thirsk]?, the housekeeper.
David is keen on cricket, and usually escapes his relatives when he is at home by going out and playing cricket with neighbouring children.
The events of Eight Days of Luke occur when, due to a confusion about dates, David and his relatives are forced to put up with each other for an entire week.