Meng Wubo (孟武伯) was the son of Meng Yizi (孟懿子). He is featured in Chapter VI of Book 2 of the Analects, in which he asks Confucius about filial piety, and Chapter VIII of Book 5 in which he asks him for his opinions on three of his disciples. Meng Wubo was a minister of the state of Lu, as was his son Meng Jingzi (孟敬子), who is featured in Chapter IV of Book 8 of the Analects.
Meng Wubo asked about filial piety. Confucius said: “The only time a son should make his parents worried is when he is sick.”
Meng Wubo asked “Is Zilu good?” Confucius said: “I do not know.” When he asked once again, Confucius said: “In a middle-sized country, he could be entrusted with military recruitment. But whether he is good, I do not know.” “And what about Ran Qiu?” Confucius said: “Ran Qiu? He could be the mayor of a small city or the manager of a large estate. But whether he is good, I do not know.” “And what about Gongxi Chi?” Confucius said: “Gongxi Chi? Standing resplendent with his sash, he could entertain distinguished guests. But whether he is good, I do not know.”