OLLERTON, a market-town and chapelry in the parish of EDWINSTOW, Hatfield division of the wapentake of BASSETLAW, county of NOTTINGHAM, 18 miles (N. N. E.) from Nottingham, and 138J (N. N. W.) from London, containing 576 inhabitants. This is a small town in the Forest of Sherwood, situated on the banks of the little river Mann. In the neighbourhood a considerable quantity of hops is produced. The market, which is but of trifling importance, is held on Friday; and there is a fair for cattle and sheep on the 1st of May. The chapel is a modern edifice in the English style of architecture. There is a place of worship fpr Wesleyan Methodists. A small bequest for the education of poor children was left by Francis Thompson.