Question: Who is Princess Ning'An's paternal grandfather?
Sentence (from "Jiajing Emperor"): His father, Zhu Youyuan (1476–1519), the Prince of Xing, was the fourth son of the Chenghua Emperor (reigned from 1464 to 1487) and the eldest son of three sons born to the emperor's concubine, Lady Shao.
Relevant evidence: Yes