Who is Deng Jiaxian's father?

Deng family (Deng, Deng, Deng, Deng Jiaxian, etc. ) was praised by the Qing government as the sixth grandson of calligrapher and seal engraver Deng. His grandfather was a famous calligrapher and seal engraver in Qing Dynasty, and his father Deng Yizhe was a famous aesthete and art historian in China. He used to be a professor of philosophy at Tsinghua University and Peking University.