I tried my youtube trick and came up with nuthin’. People with this name or daughters or friends with this name like to make pictorial montages set to music. A couple of them like to host teen on teen wrestling matches. One of them tried to make their infant daughter taste one of those bitter tart lollipops and she cried the whole time. And the ‘da ba dee’ phrase of the song [name]Blue[/name] (Da Ba [name]Dee[/name]) is different in French.
I think it’s o-say-ahn, and I’m not sure why. Oh-shayne is improbable. It might be O-shay-an, but that doesn’t sound like any of the French I took.