1) The bridge that gave access to the manorial mill, via the milnegate.
1317 ‘up a path where the Milnebrigg used to lie’, Wakefield
1360 le mylnebrigg, Cartworth
1472 the Melne brige his defectyffe & be longes to the Lord to reperall, Selby. It gave rise to several place-names, including Mill Bridge with five examples and Milnsbridge.