Alexander Dyce, A General Glossary to Shakespeare's Works

Camelot — “Goose, if I had you upon Sarum plain, I'ld drive ye cackling home to Camelot,” KING LEAR, ii. 2. 79. Camelot “was the place where the romances say King Arthur kept his court in the West” (WARBURTON) . “In the parts of Somersetshire near Camelot there are many large moors, upon which great numbers of geese are bred, so that many other places in England are from thence supplied with quills and feathers” (HANMER) . Here, therefore, there is perhaps a double allusion,—to Camelot as famous for its geese, and to those knights who were vanquished by the Knights of the Round Table being sent to Camelot to yield themselves vassals to King Arthur.