Sorry for the delay in getting back to you here.
There are people with similar names already littered around the Net, most of them add a number or something to differentiate themselves from each other.
To be effective, I think it probably needs more than a name association. A defining photo and a couple other things to prove that you're talking/writing to the same person each time. Not all of it would be on show but electronic checks wouldn't be difficult to program in.