I’m always having to correct misspellings of my surname: ‘Stainthorpe‘, with an “e” on the end, is what most people expect and write. The longer spelling seems to be about twice as common, at least on the web: Google returns ~134,000 results for Stainthorpe -Stainthorp, as opposed to ~63,700 results for Stainthorp -Stainthorpe. (Both spellings originate with the village of Staindrop, County Durham, in case you’re interested.)
(Actually, I don’t even bother to correct people a lot of the time. But it does annoy me when even my daughter’s primary school can’t get it right.)
And as one of my colleagues spotted, even Google has it in for my family name:
