According to NFL.com, Griffin's current coach, Mike Shanahan, and his former coach, Baylor University's Art Briles were among the attendees.
Washington, D.C., radio personality Rock Newman attended the wedding, and posted Facebook photos of the young couple celebrating their nuptials.
Newman had this message for Griffin and Liddicoat:
My view-RG3 & REBECCA are 2 individuals who found a profound and deep love for each other. Their authenticity was transparent and their palpable mutual love supersedes all things superficial
Griffin tweeted his own excitement, and retweeted congratulations that poured in from friends, family and the sports world.
The easiest way to say It......BIG DAY!— Robert Griffin III (@RGIII) July 6, 2013
Congratulations To My Brother @RGIII On Tying The Knott It Was Truly An Honor To Be One Of Your Best Man I Love You Bro— Ike Williams (@I_Williams4) July 7, 2013
The wedding party pic.twitter.com/Lf0mjQEW5C— William Mallow (@Williermo77) July 7, 2013
NFL Rookie of the Year - Heisman Trophy Winner - most importantly Baylor QB. RG3's wedding! pic.twitter.com/aeyMl4wUNx— Coach Art Briles (@CoachArtBriles) July 7, 2013