Well, sometimes it is unintentional... My sister named her son Kierin after her, Kim, and her husband, Erin. Then after everything was said and done, she tells all of us, then we say, Isn't that a Japanese beer?
Not to mention it can have future concequenses that just can't be anticipated... like myself for example, Ed Tsai.... I can't tell you how many times after seeing my initials if people asked if I have phoed home yet....
But as for your question, I would think anything that is an object, each other, or not even a word in any lanquage. Things like Apple Paltrow, Dweezle and Moonunit Zappa, George Forman's sons, George I-IV, and MJ's kida, Prince Michael Jackson I and II, and ESPN McCall.