Professional matters should be left to professionals.
Brian was a sociable person who had friends from all walks of life. In this realistic world, there were corresponding crowds for every demand.
It was a brutal world, so many nobles had criminal demands for certain individuals, and there were people who specialized in doing just that. Naturally, he chose to hire them.
Brian didn't skimp on money either; a few adult men could easily handle a girl, but Brian still selected two criminals with skills equivalent to Formal Knights. The first one was called Viper, a martial artist who seemed to have been a criminal before. After escaping to Worton, he disguised himself as a boxing coach but secretly continued with dirty works for money. The other one was a retired knight who called himself "Silver Hand"; Brian didn't know why he chose this line of work, but it wasn't important.