This article investigates the case of the fake child concubine, one of the “three disputed cases in the relocation to southern China” (the case of the monk Dabei, the case of the Crown who came from the north [the case of the imposter crown prince], and the case of the fake child concubine), which occurred in Prince of Fu’s regime, established in Nanjing immediately after the fall of the Ming Dynasty. The investigation reveals that there is almost no possibility of the self-proclaimed consort of the Prince of Fu being a genuine concubine.