Or "Fiennes" pronounced "fines". Or "Menzies" pronounced "mingis". Or "Featherstonehaugh" pronounced "you fat upper-class waster".
For that matter, from our American friends there's Co-Lan Powell. And we haven't even started on personal names derived from town names like Kirkcudbright (Kir-ku-brie) or Happisburgh (Hays-bra).
I guess if that's how your geographical and social influences tell you it's pronounced, and that's how you introduce yourself to people, that's how it'll get said.