Analysis of information sources in references of the Wikipedia article "塞尔苏斯图书馆" in Chinese language version.
Nevertheless, in 92 the same office went to a Greek, Tiberius Julius Celsus Polemaeanus, who belonged to a family of priests of Rome hailing from Sardis; entering the Senate under Vespasian, he was subsequently to be appointed proconsul of Asia under Trajan, possibly in 105/6. Celsus' son, Aquila, was also to be made suffectus in 110, although he is certainly remembered more as the builder of the famous library his father envisioned for Ephesus.
Tiberius Julius Celsus Polemaeanus (PIR2 J 260) was a Romanized Greek of Ephesus or Sardis who became the first eastern consul.
...statues (lost except for their bases) were probably of Celsus, consul in A.D. 92, and his son Aquila, consul in A.D. 110. A cuirass statue stood in the central niche of the upper storey. Its identification oscillates between Tiberius Julius Celsus Polemaeanus, who is buried in a sarcophagus under the library, and Tiberius Julius Aquila Polemaeanus, who completed the building for his father