Who is Josh Allen's girlfriend Get to know Brittany WilliamsJosh Allen's brother is a talented athlete in his own right. He emulates the success his notable brother has accomplished in football. While Allen has made a name for himself as a quarterback in the National Football League, his sibling opted a different path. However, he is determined to carve out his own legacy in the world of sports. Having passion and innate abilities, he strives to excel in his selected field just like his esteemed brother. Whether competing in the same division or not, Josh Allen brother stays a source of inspiration and encouragement for Allen, cheering him on from the sidelines.