Which preposition to use with dispenser

of Occurrences 61%

The difficulty was frankly faced at last, and it was ordained in council that the Colonel should be dispenser of the food.

at Occurrences 1%

These seemed a poor couple, worthless and shiftless, their only stock in trade Leonora's Italian cunning; but this stock soon came to be of vast account, for thereby she soon managed to bind and rule the Queen-Regent,managed to drive Sully into retirement in less than a year,managed to make herself and her husband the great dispensers at Court of place and pelf.

on Occurrences 1%

About once a year the state health officer visits Hooker's Bend and forces the white soda-water dispensers on the other side of the hill to sterilize their glasses in the name of the sovereign State of Tennessee.

Which preposition to use with  dispenser