Another odd one you often need to say is Sturm. I have always said and thought of it as the English S ur sound. Then one day I thought hey, this is an Anglicisation though no doubt an irreversibly established one. I ought to be saying something like Shtoorm. But later I found out he was not German though his parents were from Strasbourg. He was born in Francophone Geneva (Francophone now and I suppose then, at any rate he took classes to learn German) and spent most of his career in Paris, France. I do not imagine the Parisians made any concessions to foreign diction; I think the name does not fit easily into French diction, I imagine they did not know quite what to make of it but probably made it sound something like Monsieur Stume or Stuhrme. It must have been a lifelong awkwardness for him. Anyway I think that all let's me pronounce it how I always did.