Aïbeg and Serkis, also Aibeg and Sergis or Aïbäg and Särgis, were two ambassadors sent by the Mongol ruler Baichu to Pope Innocent IV in 1247–1248.
[1] Both were sent by Baichu, to accompany the 1245 embassy of the Dominican Ascelin of Lombardia back to Lyon, France, where the Pope was residing at the time.
[2] Aïbeg and Serkis met with Innocent IV in 1248, and remitted to him a rather vexing letter from Baichu, expressing his difficulty in understanding the Pope's message, and asking for his submission:[3] "By the strength of the Khagan, the word of Prince Baichu.
"[7] The Pope appealed to the Mongols to stop their killing of Christians, while indicating no further interest in continuing the dialogue.
[8] Aïbeg and Serkis stayed at Lyon for about a year, before returning to the Mongol realm on November 22, 1248.