《晋书·列传·第十五章》
任恺年少有见识和度量，娶魏明帝的女儿，多次升任中书侍郎、员外散骑常侍。
恺少有识量，尚魏明帝女，累迁中书侍郎、员外散骑常侍。
Ren Kai was intelligent and tolerant since childhood. He married Emperor Ming's daughter of Wei and was promoted several times to Imperial Attendant, Extra Scattered Cavalry Regular Attendant, and Imperial Attendant.