ma Ken (toki Sonko: 燕，酀，北燕、郾、匽，匽侯 /*qeːns/ (toki Sonko majuna) /jæn/ (toki Sonko), "waso Iluntenite (Hirundinidae)") li ma pi tenpo pini lon ma Sonko.tenpo sike sinpin nanpa 1044 la jan Sokonsi li pali e ona.tenpo sike nanpa 222 la ma Sin li anpa e ona. jan lawa 43 li lon ma Ken, tenpo lon pi ma Ken li tenpo sike 822.