Complex sentence: Tanizaki married in 1915, and his first child, a daughter, was born in 1916; however, it was an unhappy marriage and in time he encouraged a relationship between his first wife, Chiyoko, and his friend and fellow writer Haruo Satō.
Split into simpler sentences: Tanizaki married in 1915, and his first child, a daughter, was born in 1916. However, it was an unhappy marriage and in time he encouraged a relationship between his first wife, Chiyoko, and his friend and fellow writer Haruo Satō.