Zhou Gongdan was sealed in Ludi because of his contribution to assisting King Wu of Zhou in destroying the Shang, but Zhou Gongdan did not seal it, but sent his eldest son Ji Fowl to the state of Lu and established the State of Lu, and ji fowl was the first generation of the king of the State of Lu, Lu Gongbo Bird. Zhou Gongdan remained in Hojing to assist King Wu of Zhou.
It is reasonable to say that even if you are not sealed, you should also be called Lu Gong, because after all, it is your fiefdom, and the name of the fief is a symbol of your status, why has Zhou Gongdan not been called "Lu Gong" by people?
Because, Zhou Gongdan has other fiefdoms!
Before King Wu cut the silk, some of King Wu's younger brothers already had their own fiefdoms, but because the Zhou Plains were not large, these fiefs were very small, so small that they might only have one county and one tribe, but this was their own territory, and all rights and interests belonged to them. At that time, Zhou Gongdan and Zhao Gongyi all had their own fiefdoms. Zhou Gongdan's was in the Zhou Yuan, and the Summoning Gong's was in the West Side of the Zhou Yuan. Therefore, Zhao Gongyi, like Zhou Gongdan, although the later fiefdom was in the Yan Kingdom, it was still called Zhao Gong, and Zhou Gongdan was naturally called Zhou Gong.
Later, the Lu people respected Zhou Gongdan as "Duke Wen", but not Lu Wen Gong, because there was another Lu Wen Gong in later generations. Some people also call Zhou Gongdan "Lu Zhou Gong", in short, no one directly calls it "Lu Gong".
So there were two fiefdoms before and after Zhou Gongdan? No, his fiefdom has eight!
Zhou Gongdan had a total of eight sons, in addition to the eldest uncle and bird, and seven of them were later sealed. This matter has to start from the Zhou Gongdong Crusade.
After the death of King Wu, King Ji of Zhou Cheng ascended the throne, and King Wu's fourth brother Zhou Gongdan assisted in the administration, but Zhou Gongdan's third brother Guan Shuxian disagreed (King Wu was the second eldest), so the "Rebellion of the Three Prisons" broke out shortly after the founding of Western Zhou. Zhou Gongdan used the "Zong Saturday Division" to quell the rebellion, and finally quelled the rebellion. In order to consolidate the rule of the Kwantung region, Zhou Gongdan established the new capital Luoyi in the Heluo region, known in history as "Chengzhou", and used the men and horses of the original three prisons to form the "Chengzhou Eighth Division", and the Western Zhou was stable.
After that, King Cheng of Zhou once again enfeoffed the princes with the surname of Ji (in fact, presided over by Zhou Gongdan), and all seven of Zhou Gongdan's other sons were enfeoffed. The sub-seals are as follows:
The second son Ji Chen was sealed in the State of Zhou (formerly the fief of Zhou Gongdan), the third son was sealed in the State of Fan, the fourth son Ji Ling was sealed in the State of Jiang (the ancestor of the Jiang surname), the fifth son Ji Tho was sealed in the State of Xing, the sixth son was sealed in the State of Mao, the seventh son was sealed in the State of Qi, and the eighth son was sealed in the State of Sacrifice. This is what history calls it: "The duke of Zhou has eight sons, and seven sons are sealed."
Although Zhou Gongdan has made great contributions, he has also gained many benefits. With so many fiefdoms, will he still be called Lu Gong? Only the Zhou State of Zhou Yuan was his initial fiefdom, so it was most appropriate for him to be called "Duke of Zhou".