What's the name of Su Shi's father?

Su Xun. Su Shi (1037—11year), a native of Meizhou (now Meishan, Sichuan), was a writer, calligrapher and painter, and was one of the eight masters in Tang and Song Dynasties. Together with his father Su Xun and his brother Su Zhe, he was called "Su San". Su Xun, named Mingyun, died in the capital in the third year of Zhiping (1066), and was also one of the eight famous poets in Tang and Song Dynasties.