Where did the last name of Glass come from?

This uncommon surname, chiefly recorded in the West Midland counties of Shropshire, Worcestershire and Warwickshire, is of Anglo-Saxon origin, and is a metonymic occupational name for a glazier or glass blower, deriving from the Olde English pre 7th Century "glaes", glass (akin to "glaed", shining, referring originally to the bright shine of the material).