Guardian of the royal bowels

Another term for a royal physician, or doctor

Found on Wikipedia’s timeline of medicine and medical technology that discusses an inscription Egyptian physician known as Iry who was also considered the eye-doctor of the palace, palace physician of the belly, and he who prepares the important medicine and knows the juices of the body.

For a non-doctor example and a similar job, see: Groom of the Stool

King Arthur: Ugh, my stomach is bothering me again.
Sir Henry: Should I call for the Guardian of the Royal Bowels then, sire?

King Arthur: Do it quickly, I don’t have all day! I have a kingdom to rule over.