My Name is Lee Sang Joon

And we made it so funny and jokingly twisted some names of our "friends" with Korean names. Absurd as it is I do not know if this is right. I have made some sample and it made sense. The surname is right and the middle name but I am still confused how they ( Koreans) distinguished their relatives if there are so many Park(s) which is derived from merely the year of their birthday. Please explain to me. If I have seen this one a couple of days ago I could ask it to some Korean newcomers in our plant. I had the chance to talk to one Korean but it was brief and he was so inquisitive of the Filipino food and culture. I hope I could talk much more to him. If given the chance I will ask him about this "Korean names".

And by the way based on the table above, my name is Lee Sang Joon.