Patron Saint Of Anemics When Catholics Have A Patron Saint For Their Job Did The Man They Pray To Agree To Be Their Patron Saint?

When catholics have a patron saint for their job did the man they pray to agree to be their patron saint? - patron saint of anemics

Perhaps the patron saint of the firemen, and it would be the patron saint of plumbers. Catholics do not ask the saint what he wants to be a model prisoner or not the Pope in your job?