 If for some reason you are confused about who I am talking about, the natural thing for you to do is to ask me “Which David Cameron do you mean?” I might then respond “The former Prime Minister of the U.K.,” and this seems to be dispositive of the facts here. That is, supposing that this is the description I had in mind, then it would seem that my utterance of (2) is genuinely about David Cameron the former Prime Minister and not our mutual friend, the non-politician. Likewise, the truth or falsity of (2) would seem to hinge on how things are with the former Prime Minister and not on how things are with our mutual friend of the same name. 