There is a widespread belief that the name of Berwick-upon-Tweed derives from a meadow in the vicinity having produced a crop of barley, though how long ago, nobody seems to know.
I do wonder about this. Is it likely that a settlement in such a strategic location was identified originally by anything as ordinary, transitory & ephemeral as a cornfield ?
In this context no explanation seems to be offered for the use of the name Berwick elsewhere – more often than not in locations near historic borders.