1) A dealer in woad, the blue dye-stuff obtained from a plant found originally in central and southern Europe.
It was in great demand in England in the Middle Ages: 1185 William le Waisder, Yorkshire
1274 Robertus de Walcheford, wayder
1293 Johannes le waider, junior
1303 Stephanus de Whiteby, wayder, York. A possible alternative was ‘wademan’: 1375 Ricardus de Norham, waddeman, York.