Us Aussies are a simple bunchOr "Keane" (which I wouldn't consider incorrect; I'm Irish, before anyone has a go at me). I've seen its spelling anglicised to Keane -think it's awful but that's neither here nor there.
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Not stupid at all.
(Though I couldn't understand how the Americans who were bellowing at Cillian Murphy during an awards ceremony (possibly The Oscars) didn't know how to say his name correctly when it was in the media so much.)