Who is Fang Shiyu's son?

Fang Shiyu was the son of Fang De, a silk merchant, and his second wife, Miao Cuihua, during the Qianlong period of the Qing Dynasty. In history, Fang Shiyu was only 24 when he died, so he had no wife. However, in many TV dramas, Fang Shiyu got a good marriage, which can be regarded as making up for the real regret.