Premise: In the matter of pronunciations of BrEng names, it is an old-fashioned fantasy of Americans that Brits go round saying POM-frit for Pontefract : most Brits that I have heard give the name a spelling pronunciation these days; and so with many of the old shibboleths.

Hypothesis: This is because America went so long dunking on Britian that we have a lot of stereotypes.
Relation: neutral