Darby and Joan

dar'by and jon, a married couple, John Darby and wife, said to have lived in the eighteenth century in the village of Healaugh, in the West Riding of Yorkshire. They were famous for a long and happy married life. The couple were celebrated in a balled called "The Happy Old Couple," by Henry Woodfall. The names are sometimes used figuratively to describe a peaceful but uneventful married life.