Williams played on both sides of the ball at Champagnat Catholic, where he recorded over 1,200 total yards, 9 touchdowns and 4 interceptions, while also battling a groin injury.
He's rated as the nation's 52nd best safety prospect by Scout.com.
Click here to view an updated list of Louisville commitments.
Williams collected over 20 scholarship offers during the recruiting process and also took an official visit to Nebraska.
Linebacker Finesse Middleton, who is already enrolled and taking classes at U of L also switched his commitment from Ole Miss to Louisville.
Following William's pledge to Louisville, the Cardinals average star rating for it's commitments is 3.08, which is tied with Stanford and Vanderbilt at 25th.