The sheik's tragedy

He was the sixth in the family line to assume the shiekdom, and thus he was the Sixth Sheik. He owned a flock of prize sheep, all of registered stock. They were numbered in order of their births. The sixth to be born was his particular favorite, and thus was known by the Royal Shepherds as the Sixth Shiek's sixth sheep. Sadly, this beloved animal took ill, and a messenger was sent to the Royal Veterinarian. Said messenger dashed to the doc's office and blurted out, "The Sixth Shiek's sixth sheep's sick." He blurted it out - can you?