Indeed Johns few trusted confidants were nearly all foreigners, such men as the mercenary captains Gerard of Athies and Engelhart of Cigogn, whom he made sheriffs and castellans to the discontent of all Englishmen.
That's what sheriffs do.
Just because Jake Weller has a pot belly doesn't mean all sheriffs are supposed to be fat.
In Edward IV.'s reign the elections of mayor, sheriffs and other officers and members of parliament were transferred to liverymen.
The sheriffs were ordered to publish the revised charter on the 22nd of February 1218.