Ask HN: Single Letter Last Name or First Name

Reaso : See below. I am from southern part of India where we use to give names in School like "V F Myself" which is basically V for Village , F for Father and followed by my Name. So name like P N Giri was the name written in school certificate and with absemse of birth certificate school certificate forms as basic validation artifact of name and birth date. Now until about Year 2000 we did not have any issue as most websites either not used validation in names or it hand written forms and registers. Now after coming in contact with west we had to that name to Giri N otherwise US people will call me Hello N (huh!!) which was also ok. But the issue most of the websites now dont accept my last name as single letter which N so my face Giri Ns (S for space) i have option of expanding the name but 1. i dont like it blooks like alien name to be 2. all proofs including my bank passbook , school certificate and other have N.Giri as name. (I heard from a friend in thailand who had issue it name X and he change to Xe or something)