Jerrod L. Williams’ introduction to the Cook County Bar Association came in 2013 when he was invited to the installation dinner by Appellate Justice Nathaniel R. Howse Jr.When he attended the installation dinner last week, six years after that first encounter, Williams was sworn in as the association’s president. The CCBA is the oldest association of African American lawyers and judges in the country.“I’m very excited for the bar year,” Williams said. “The activities that we will be …