宇文部鮮卑
宇文普回，宇文氏的始祖。根據《周書》的記載，普回是炎帝神農氏的後裔，在一次打獵的時候拾得三個玉璽，上有“皇帝璽”的字樣，普回非常驚異，認為這是上天所賜。根據鮮卑族的習俗稱天為“宇”，稱君為“文”，所以自稱他的部落為宇文國，並以宇文為其姓氏。
Yuwen & P return, Yuwen Shi's ancestor. According to "Zhou Shu" record, S & P return is about Yan's descendants, when Lost in a hunting three Yuxi, on the "Emperor Xi" message, general back very surprised that this is the gift of God. According to the custom of that day Xianbei as "Yu", said the king "culture", it claimed that his tribe was Yuwen country, and to Yuwen its name.