《三国志·蜀书·诸葛亮传》
当初诸葛亮还没有孩子，请求让诸葛乔作为继承人，诸葛瑾说孙权派诸葛桥到西蜀，诸葛亮认为诸葛乔是自己的继子，所以改换了他的名字。
初，亮未有子，求乔为嗣，瑾启孙权遣乔来西，亮以乔为己適子，故易其字焉。
Since Zhuge Liang had no children, he requested to adopt Zhuge Qiao as his heir. Zhuge Jin said that Sun Quan had dispatched Zhuge Qiao to Xishu, and Zhuge Liang considered Zhuge Qiao to be his adopted son, so he changed his name.