赵献子 / Zhao Xianzi
赵献子 / Zhao Xianzi, personal name 赵浣, appears in 《资治通鉴·周纪》04｜豫让 为智瑶复仇 as 代成君’s son and 赵伯鲁’s grandson. 赵襄子 designates him as successor instead of naming one of his own sons.
The source says Zhao Xianzi succeeds Zhao Xiangzi in 425 BCE, is soon expelled by 赵桓子, and is restored in 424 BCE after Zhao Huanzi dies. After Zhao Xianzi’s own death, his son Zhao Ji succeeds; the episode identifies Zhao Ji as 赵烈侯, one of the three figures later formally recognized by 周威烈王.