《资治通鉴·齐纪·齐纪十》
自从祖父于粟以来，于家几代显贵兴盛，家门中出了一个皇后，四个人被封公爵，三个人任领军，两个人任尚书令，还有三个人是开国公。
自祖父栗磾以来，累世贵盛，一皇后，四赠公，三领军，二尚书令，三开国公。
Since his grandfather Yu Su, the Yu family had been prominent and prosperous for several generations. There was a queen in the family, four were named dukes, three were appointed as military leaders, two as ministers of the state, and three as founding dukes.