Rich III was in fact Duke of Gloucester, wasn't he -- that's "Gloster", not "Glau-cess-ta".

≈M≈

Some people can be very silly about pronunciations of names. I remember an American I knew at Cambridge who would always facetiously pronounce a S London suburb as "green" [like the colour] "witch" [like a hag on a broomstick], till I pointed out that they had pinched the name lock stock & barrel for the Village section of New York & seemed to have no difficulty saying it. He confessed he had never made the connection.