Can I just say what an interesting thread this is - credit to you, sir (and all who have posted here!) (Mind you, all the a-tooing and a-froing reading various "takes" on the subject makes me dizzy) ;-).
I was away at a trade show the last week, and I asked a Swedish friend what he thought Maeshowe sounded like to him, and he said it was similar to the Swedish for "my house". I'll ask my Norwegian client what he reckons of it