John Edward Gray wrote nearly 500 papers, including many descriptions of species new to science. These had been presented to the Museum by collectors from around the world, and included all branches of zoology, although Gray usually left the descriptions of new birds to his younger brother and colleague George. Gray was also active in malacology, the study of molluscs. John Edward Gray was buried at St Mary's Church, Lewisham. Gray was one of the most prolific taxonomists in the history of zoology. He described more than 300 species and subspecies of reptiles, only surpassed by his successors at the British Museum, George
Four Branches of the Mabinogi several tale episodes in a sequence, and each Branch is titled with the name of a leading protagonist. These titles are Pwyll, Branwen, Manawydan and Math, but this is a modern custom: the Branches are not titled in the mediaeval manuscripts. Only one character appears in all four Branches, Pryderi, though he is never dominant or central to any of the Branches. "Pwyll Pendefeg Dyfed", "Pwyll Prince of Dyfed", hunting on his own land, meets the shining Cŵn Annwn or "Hounds of Annwfn", and takes another man's kill, a stag, for himself. Arawn, the king of Annwfn, is greatly offended.