In 1789 Robert Raikes married the daughter and heiress of Thomas Williamson of Welton House, in the village of Welton, near Hull. Early in the 19th century Robert and Elizabeth Raikes moved to Welton House, and the property passed to them on the death of Williamson in 1809. In 1818 Raikes built an elegant classical rotunda in a romantic dale above the house, which was to be a mausoleum for his family.