If you are named Kong Guang X after the genealogy, you are the seventieth generation of Confucius. Your parents should be Kong Ji X, and your nephew should be Kong Zhao X. Genealogy: 60th generation: Kong Cheng X 6th1generation: Kong Hong X 62nd generation: Kong Wen X 63rd generation: Kong Zhen X 64th generation: Kong Shang X 65th generation: Kong Yan X 66th generation: emptiness X 67th generation: Kong Yu X 68th generation: Kong Chuan X.

Reference: personal knowledge+online information

The advantages of Kong surname-generally considered to be full of kindness (descendants of Confucius) and the disadvantages of Kong surname-will make people laugh at your name Bu (fear Bu).