Archaeologist Lacey Wallace notes that "Because no LPRIA settlements or significant domestic refuse have been found in London, despite extensive archaeological excavation, arguments for a purely Roman foundation of London are now common and uncontroversial." The city's Latin name seems to have derived from an originally Brittonic one and significant pre-Roman finds in the Thames, especially the Battersea Shield (Chelsea Bridge, perhaps 4th-century BC) and the Wandsworth Shield (perhaps 1st-century BC), both assumed to be votive offerings deposited a couple of miles upstream of Londinium, suggest the general area was busy and significant. It has been suggested that the area was where a number of territories met. There was probably a ford in that part of the river; other Roman and Celtic finds suggest this was perhaps where the opposed crossing Julius Caesar describes in 54 BC took place.