"e" takes the umlaut in both the original Greek (Bronte) and the proper name
No criticism intended at all in this question. Is there a "correct" usage of the terms umlaut, diaeresis/dieresis, trema (and probably others) for the two dots which modify the vowel sound, or keep two vowel sounds separate (as in noël)? For example, should umlaut refer to just German, or include the indicator when used in other languages? And what about "noël"; is that an umlaut or a diaeresis or some other name?
As an aside, I had difficulty in tracking "trema" down in the normal online dictionaries, which surprised me as I know what it is and have seen and used it, though not very often perhaps. However, I found it via onelookup at
http://phrontistery.50megs.com/t.html and was fascinated by some of the other entries on the same and surrounding pages, and no, not just the rude ones.
Rod
PS I copied the ë from character map. ALT+0235 produces the hash/number/pound (yet another thread?) symbol #.