The pages on my old website are rather old now - when they were first written they were "groundbreaking". I can not make any changes to those pages as they are no longer "live" (geocities is no longer in business). At the time of writing the page on the Jacobean pattern we had no knowledge of Schrotter. However, when our recent book ("Carnival Glass The Magic & The Mystery 2) was written (published in late 2008) we wrote extensively about Rudolf Schrotter in the book.
My field of writing and research is primarily Carnival Glass (pressed, iridised glass). I object in the strongest possible terms to your accusation that my comment (as shown in your post above) "is a complete misunderstanding". I said that the items were made by Josef Inwald. That is a widely used convention (certainly in Carnival Glass circles). For example, we say that pieces are made by Harry Northwood. It's a figure of speech. We don't mean to imply that Harry Northwood or Josef Inwald actually rolled up their sleeves, gathered the hot glass, pressed it, iridised it and placed it carefully on the lehr.
I have been writing on the GMB for many, many years. I have (I hope) helped many people during those years. I have always been as thorough as possible in my very extensive research and my writing - and I always give detailed, historical facts where possible. I wrote on this thread in good faith because I was trying to help and to give information. I think this is the last time I shall be writing here.