Li Chengqian's wife was Hou Junji's daughter, Hou shi.
Li Chengqian had a total of three sons, namely Li Xiang, Li Jue, and Li Yi. Li Xiang had held many positions in the Tang Dynasty, including Huaizhou and Ezhou. Li Jue was the grandson of Li Shimin, Emperor Taizong of the Tang Dynasty. He once served as the governor of Ezhou and was posthumously awarded the title of envoy to Qingzhou's military, Qingzhou governor and Zong Zhengqing. As for Doctor Li, there was not much information about him. They only knew that he was born from a concubine and was born between the eighth and twelfth year of Zhenguan.
Li Chengqian had a total of three sons, namely Li Xiang, Li Jue, and Li Yi. Li Xiang served as the governor of Huaizhou during the period of Emperor Taizong of the Tang Dynasty, Li Shimin, and was later granted the title of Governor of Yuezhou and Duke of Huan. Li Jue once served as the governor of Ezhou, and was later posthumously presented as the military envoy of Qingzhou, the governor of Qingzhou, and Zong Zhengqing. As for the specific situation of Doctor Li, the search results did not provide any relevant information.
Li Chengqian was the Qing Emperor's third son and also the Crown Prince. He was not counted in the ranks of the princes because he was born of the Empress and was the successor the Qing Emperor valued the most. Thus, Li Chengqian did not belong to any of the Qing Emperor's princes.