reference to DeathWatch Mary Mackleforth, a nurse in the novel Oh, Doctor! by Harry Leon Wilson. See also Oh, Doctor! and Wilson, Harry Leon in this glossary.a reference to DeathWatch Mary, a character in the novel Oh, Doctor! by American author, Harry Leon Wilson (1867-1939). DeathWatch Mary is one of the nurses taking care of the maincharacter, Rufus Billop. DeathWatch Mary enters to inspect Billop who has taken to his bed to die in spite of having nothing wrong with him. Checking his temperature she disagrees with the first reading of the thermometer and requests a new one to replace it. Aptly described by one of his associates as a nurse who could "put you to bed and pat your pillows and take your temperature and have you thinking in two days that your last hour had come," DeathWatch Mary is later replaced by another nurse who assists Billop in recovering from his supposed ailments.