1) A regional word for a weaver.
Found as an occupational by-name in Yorkshire from the thirteenth century and widely distributed in the period when surnames were stabilising: 1279 Johannes filius Rogeri Webster, York
1379 Johannes Webster, textor, Timble. ‘Weaver’ is on record in the late 1400s but webster remained in use into the seventeenth century at least: 1504 landes in Barnard-castell late in the holdyng of a webster, Marske
1634 Simon Haldisworth of Addingham, lynninge webster. See GRDict.