noun: A personal servant, especially one who is resourceful and reliable.
After Reginald Jeeves, a valet in the stories by P.G. Wodehouse. Jeeves first made his appearance in a short story in 1915. Earliest documented example of the word used allusively: 1952.
“When you’ve got a billion dollars at your disposal, and a Jeeves to take care of your travel arrangements, nothing untoward is going to happen to you.”
Nicholas Barber; The Bucket List; The Independent (London, UK); Feb 17, 2008.