Just kidding about ethnic names. :-) Seriously speaking, Nan Yue people were assimilated into Han Chinese among Guangdong province by Sui dynasty so I suppose I myself could have some Nan Yue blood in myself. It is commonly hypothesized descendents of assimilated Nan Yue Han Chinese live outside Pearl River Delta and in particular in the Western and Southwestern part of Guangdong like Zhaoqing or Zhenjiang.
My ancestor was Confucius and when it came to my Tang dynasty ancestor I think they already belonged to the "Southern" branch (the "Northern" branch belongs to the current direct male in line descendent Kong Decheng who is in Taiwan). I only know for sure that my ancestor (about 8th or 9th generation ancestor - about Qianlong times of Qing dynasty or around 1740) settled in Yunfu county in Guangdong province near Zhaoqing (which remains my ancestral home registration despite having seen not an inch of Yunfu county in my life).
In today's Guangdong the commonly recognized minosities include Zhuang and Yao (both also speak Cantonese and Mandarin).