本文據傳世文獻指出漢代皇室與諸侯王均行娣媵婚，皇室娣媵婚的對象主要是權貴、大族，東漢皇室與扶風大族的娣媵婚甚至建立了同盟婚姻圈。接著探討考古資料，論證大雲山10號墓墓主「淖氏」與傳世文獻裡的「淖姬」不是同一人，江都王與淖家的婚姻應可視為娣媵婚；然後以淖氏墓隨葬齊國漆耳杯，推測其出身齊地大族，似為戰國晚期楚將淖齒之後，10號墓可能是目前所見第一個漢代諸侯王與大族行娣媵婚之例；繼而從罕見姓氏的強烈地域性，推測2號墓江都王后連氏、12號墓高級姬妾淳于氏亦可能出身齊地大族，西漢齊地大族似乎亦有同盟婚姻圈。綜上所述，漢代上層社會的娣媵婚與同盟婚姻圈，可視為周代貴族社會的媵制餘緒，故可謂「媵制已死，娣媵仍存」。

This article points to the existence of sororate marriage and marriage-based alliances among the upper class of the Han dynasty and argues that such a phenomenon showcased the legacy of sororal polygyny in Zhou dynasty aristocratic society. Based on received texts, the article first indicates that in the Han period, both the imperial lineage and other royal families practiced sororate marriage with powerful or esteemed families; the imperial house of the Eastern Han even built up an alliance with important families in Fufeng 扶風 via sororate marriage. The article then uses the archaeological evidence from Tomb 10 at Dayun Hill 大雲山 to suggest that the tomb was likely to have been for a member of an esteemed family in the Qi 齊國. The uncommon local family names of those interred in Tombs 2 and 12 allow us to further postulate that these people were also from esteemed families in the Qi, meaning that sororate marriage alliances may have also existed among the Western Han.