Nan 南
Nan (南) is a Chinese surname. Henan based Nan Jiyan (南霽雲) was a general at during the Tang Dynasty. various origin of;
Nangong 南宮
Nangong (南宮) is a two-syllable family name from the city name "Nangong" (南宮), later reduce a surname to Nan (南).
Nanguo 南郭
Nanguo (南郭) is a two-syllable family name from old city name "Nanguo" (南郭), later reduce a surname to Nan (南). during the Zhou Dynasty, Guo Shu (虢叔) lived in Nanguo (南郭).
References
Nan (surname) Wikipedia(Text) CC BY-SA