LONDON—A collection of artworks and objects valued at more than £15 million ($22.4 million) has been accepted by the U.K. Treasury in lieu of death duties, or inheritance tax, on the estate of an undisclosed deceased person, the Guardian reports. The newly acquired collection includes paintings by J.M.W. Turner, the watercolor Carisbrook Castle among them, and pre-Raphaelites Edward Burne-Jones and Dante Gabriel Rossetti, as well as an embroidered undershirt owned by British naval hero Lord Horatio Nelson. Some of the objects will now return to the five National Trust houses from which they came.