 The earliest known evidence of a human presence in what is now Oldham is attested by the discovery of Neolithic flint arrow @-@ heads and workings found at Werneth and <unk> Hill , implying habitation 7 – 10 @,@ 000 years ago . Evidence of later Roman and Celtic activity is confirmed by an ancient Roman road and Bronze Age archaeological relics found at various sites within the town . <unk> of Celtic origin are still to be found in Oldham : Werneth derives from a Celtic personal name identical to the <unk> <unk> , " alder swamp " , and Glodwick may be related to the modern Welsh <unk> , meaning " <unk> " or " ditch " . Nearby Chadderton is also pre @-@ Anglo @-@ Saxon in origin , from the Old Welsh <unk> , itself deriving from the Latin <unk> meaning " chair " . Although Anglo @-@ Saxons occupied territory around the area centuries earlier , Oldham as a permanent , named place of dwelling is believed to date from 865 , when Danish invaders established a settlement called <unk> . 
