《史记·三十世家·绛侯周勃世家》
公主就是文帝的女儿，周勃的长子胜之娶她为妻，所以狱吏教周勃让她出来作证。
公主者，孝文帝女也，勃太子胜之尚之，故狱吏教引为证。
The princess was Emperor Wen’s daughter, and Zhou Bo’s eldest son Sheng had married her, so the warden was telling Zhou Bo to get her to testify for him.