ACASTER-SELBY, a township in that part of the parish of STILLINGFLEET which is in the ainsty of the city, and East riding of the county of YORK, 1 mile (S. by W.) from York, containing 188 inhabitants. This place formed part of the possessions of the abbot of Selby: the village is pleasantly situated on the banks of the navigable river Ouse. A college for a provost and two or three fellows, one of whom was to instruct children, was founded here by Robert Stillington; at the dissolution its revenue was £33. 10. 4. Here is a free school which is supported by a small endowment.