《元史·本纪·卷四》
初九，大司农姚枢请求任用儒士杨庸教导孔、颜、孟三姓子孙，东平府详议官王镛兼任礼乐提举之职。
戊辰，大司农姚枢请以儒人杨庸教孔、颜、孟三氏子孙，东平府详议官王镛兼充礼乐提举。
9th of the month: Grand Minister of Agriculture Yao Shu suggested that the Confucian scholar Yang Yong be appointed as an assistant to teach Confucian philosophy to descendants of the Kong, Yan and Meng clans. And that further, Wang Yong, the organising official for the Dongping prefecture, should also be made a junior official in the Ministry of Rites.