I have been researching the Trumpess name for a few months now, currently I am tracking down all the names that I can find - not many.
In Norfolk and the surrounding area the name Trumpess is pronounces with the emphasis on the Trump with a tiny "ess". For a strong accent it will become Trumpass, that is how Thomas Trumpess left Griston, Norfolk and became a Trumpass in Vermont.
So far I have around 100 Trumpess and Trumpass names. I haven't yet started to form any order. There are several geographic clusters in England and Vermont with some Trumpous in Ontario.
I would be interested in hearing from any other Trumpass/Trumpess researchers