主父偃 / Zhufu Yan
主父偃 / Zhufu Yan appears in 《资治通鉴·周纪》29丨苏秦励志爽文：知识改变命运 inside 司马光’s poem to 吾之才. The poem pairs him with 苏秦 as an example of a talented person who may be dismissed by close relations while still capable of later prominence.
The source uses Zhufu Yan as a reception analogy, not as a developed Han-dynasty biography. His wiki role here is to show how Su Qin’s story became part of a larger consolation vocabulary for frustrated literati.