Which preposition to use with swineherd

of Occurrences 4%

Now it chanced that the swineherd of Sir Nabon's castle had been slain in a quarrel with one of his fellows, so that when Sir Nabon beheld Sir Lamorack, that he was big and sturdy of frame, he said: "I will spare this fellow his life, but I will make him my swineherd.

in Occurrences 3%

He fled away and was pursued, we read, by Cynewulf, so that he took refuge in the forest of Andred where he was safe from pursuit by many men, being killed at last at Privet near Petersfield in Hampshire by a swineherd in revenge for his master's death.

to Occurrences 1%

So they led Sir Lamorack away, and he became swineherd to Sir Nabon surnamed le Noir, and presently in a little while he grew so rough and shaggy that his own mother would hardly have known him had she beheld him.

Which preposition to use with  swineherd