Who are the ancestors of Rou in the past dynasties?

I'm sorry, I can't provide information about my ancestors named Rou. But it can provide the source of Rou surname. Soft surnames mainly come from two aspects:

1. On the one hand, Rou's ancestors can be traced back to Mugulu in the second half of the 3rd century. He is a slave of Xianbei Tuoba Department. Cheluhui, the son of Gu Mulu, began to have a large number of people, and he has been soft since the middle of the 4th century. Rouran people later established Rouran country, and tribal leaders changed their surnames to Rouran in the name of Rouran Khan.

2. On the other hand, Rou was also related to the migration of Sophora japonica in Hongdong in Ming Dynasty. During the Hongwu period of the Ming Dynasty, Pingyang Prefecture, Hongtong County, Zhaocheng County and other ethnic groups changed their names from "no matter" to "rou" in order to move the locust tree in Hongdong to other places, which were distributed all over the country.

I hope the above information is helpful to you.