Box and Cox

Box and Cox, farce (1847) by John M. Morton †1891 English playwright, and Cox and Box, comic opera (1867) with text by Sir Francis C. Burnand †1917 English playwright and music by Sir Arthur S. Sullivan †1900 English composer, adapted from Morton's farce; from the arrangement in the farce and opera whereby the same room is rented to two men named Box and Cox, one occupying it by day and one by night without either's knowing about the other