I'd say it's rather like this : ロバート・ケーンズ, with KE (not KA) because in english, "a" is pronunced [EI].
Thank you very much again. I have attached a YouTube like below, which pronounces "Carnes (though not Karnes)." http://www.youtube.com/watch?v=wQTDQ9mj8Gw Could you tell me if this sounds right or similar to what you suggest ? I believe it does not make any difference if the name begins with "K" or "C." Yours, Hide