[Tealeaf]

It seems to me that those lamps are no more than an ornate decoration to the library, built with Mr Carnegie's money, in 1913 (if I recall correctly). Yet the inference is that the term 'Gobbiner' is far older than that (nineteenth, possibly eighteenth century) so I cannot see where the lamp connection is coming from, unless, of course, at some point in time there was another lamp which have served as a boundary marker or for some other use.