Bao Zheng
In legends, because he was born dark-skinned and extremely ugly, Bao Zheng was considered cursed and thrown away by his father right after birth. However, his virtuous elder sister-in-law, who just had an infant named Bao Mian (), picked Bao Zheng up and raised him like her own son. As a result, Bao Zheng would refer to Bao Mian's mother as "sister-in-law mother".