There is a wine made here which is called St Laurent. DH and I both being francophones, we thought it was pronounced Sanloro (that's the nearest I can get to the French pronunciation) However, it is, apparently, pronounced the German way (Sankt l-ow-rent) so we are careful to pronounce it that way and are grateful to the vintner who taught us that. So even with German which is very much pronounced as it is written, you can get it wrong sometimes.
I am very wary of pronunciations of (English) words I have only learned since moving to Germany. Often I have also only read them and not heard them, and can easily make mistakes, even though I know what they mean. "Coelecanth" had me flummoxed at first, and Instill get thrown by "hegemony". I looked the latter up and there are very different accepted pronunciations between American and British English, but I can never remember which is which. Which syllable to emphasise? Is it a hard or a soft "g"?