Thursday 12 April 2007 11.21pm
This might help, though there appear to be a couple of theories as to its origin -
'The earliest mention of Southwark by name in history is in A.D. 1023, when the Saxon chronicle tells us that Knut, and Egelnoth, Archbishop of Canterbury, with some other distinguished persons, carried by ship the body of Alphege, saint and martyr, across the Thames to "Suthgeweorke," on its way to its resting-place at Canterbury. In "Domesday Book" the name appears under the form of "Sudwerche."
It is generally said that Southwark was never fortified till quite a recent period. How, then, did its name, "wark" or "werke," arise? Is it the same word as in bulwark? A fortress built by the Earl of Mar, in Scotland, is called "Mar's wark or werke;" and possibly the same word is embodied in the word "Southwark."
Mr. Worsaae, in his "Account of the Danes and Norwegians in England," refers to the possession by those peoples of Southwark, the very name of which, he adds, is unmistakably of Danish or Norwegian origin. "The Sagas relate that, in the time of King Svend Tveskjæg, the Danes fortified this trading place, which, evidently, on account of its situation to the south of the Thames and London, was called Sydvirke (Sudvirke), or the southern fortification. From Sudvirke, which in AngloSaxon was called Sud-geweorc, but which in the Middle Ages obtained the name of Suthwerk or Swerk, arose the present form—Southwark. The Northmen had a church in Sudvirke, dedicated to the Norwegian king, Olaf the Saint." It is stated that the name of Southwark has been spelled in no fewer than twenty-seven different ways in old writings.'
'The Southern Suburbs.' Introduction
Centre for Metropolitan History