I. Origin of surname:

The first source: from the son, from the fief sealed to the eldest son Wei, belonging to the country name.

Ancestors began in the Warring States period. Wei is the eldest son of Emperor Shang Zhou and his younger brother. He saw that Zhou Wang was helpless and urged him again and again. Zhou Wang was very angry, but it was not easy to kill his brother, so he didn't listen to the advice. Wei had no choice but to leave with all the tablets of Shang ancestors. This is the famous story of "Cabbage went to Yin".

According to the historical book "Shiyuan", after Zhou Wuwang conquered the Shang Dynasty and established the Zhou Dynasty, Wei received generous treatment. Zhou Wuwang awarded the title of Duke to his eldest son in Yi Song. One of the descendants was sealed in Tan Yi during the Warring States Period, and established Tan Guo, also known as Tan Guo, calling him "Tan Jun". The thirty-sixth generation was destroyed by Chu, and his grandson took the country as his surname and passed it on to Tan. Later, when writing, because of incorrect words, it became a weak surname.

This theory needs further study.

The first origin: originated from place names, originated from Lingling Mountain since ancient times, and belongs to the name of Juyi.

According to the Lonely Wake Magazine written by Zeng Minxing, a scholar in the Song Dynasty, "Lingling Mountain is rocky and hollow, which can accommodate thousands of people. There are stone windows in the southeast, overlooking. According to legend, the land should be light bamboo, hence the name of the mountain. Or the old name of the cloud is inhabited. " This is another branch of Tan's family.

Huang Tingjian, a famous great writer in the Song Dynasty, intoned in his famous poem "Two Poems on Shallow Mountains and Rocks": "People with shallow mountains and surnames are safe, and the monarch is required to avoid Qin and not return. When did the Shimen Bamboo Trail exist? Shi Yao of Qiongtai is still in doubt. Take ten guests back to Zhongjingming Street, or get drunk and dance clothes. What is the fruit in the south of Zhangzhou? Yongzhou Yan Danshi is rare. "

Lingling (now Lingling, Yongzhou City, Hunan Province) is an important county in the ancient Xiang-Gui Corridor, but its county governance position has long been ambiguous. According to textual research, the site of Chengzishan ancient city in the north of Xing 'an today is the seat of Lingling county in Han Dynasty.

The second origin: in terms of surname change, a person named Liu from Tongzhou in the Ming Dynasty changed his surname for some reason.

In the Ming Dynasty, the Liu family in Tongzhou (now Dali, Shaanxi Province) was ashamed of sharing the same surname as the imperial eunuch Liu Jin, and changed Liu's surname to Dan's. Actually, Liu Jinyuan's surname is Tan. Later, he was introduced to the palace by a eunuch named Liu, and then he took Liu's surname.

2. Each ancestor:

Information needs to be supplemented.

People with simple surnames, such as simplicity and sincerity.