Ouyang Xiu: Born in 1007 and died in 1072. His name is Yong Shu, and his names are Zuiweng and Liu Yiju. Politicians and writers in the Northern Song Dynasty were eight masters in the Tang and Song Dynasties ... from Yongfeng, Jizhou (now Jiangxi). Tiansheng eight years, promoted to the first division, the official to participate in politics. Because the new law did not agree with Wang Anshi, he retired to Yingchuan. He is well-read and is famous for his articles. He compiled Poems of Mao, History of the New Five Dynasties and Ancient Records. , and cooperate with Song Qi to compile the New Tang Book. Later generations compiled The Collection of Ouyang Wenzhong.
So, Ouyang Xiu and Ou Yangxun can't be brothers at all. If you insist on asking what their relationship is, you can only say that Ou Yangxun is Ouyang Xiu's elder.
As for what you said about An Ouyang, I suggest you go to the following website and maybe find it:
/blog/liangjialoo/article/B0-I 2273240 . html