Williams Law Group, LLC Williams Law Group, LLC is a family and divorce law firm in Parsippany-Troy Hills, New Jersey. In addition to divorce and family law, e handle cases involving child welfare, child custody, domestic violence, alimony, same-sex civil unions and dissolutions, and more. Our team - lead by attorney Allison C. Williams - takes pride in fighting for you and your future with a balanced mix of assertiveness and compassion. Call the Williams Law Group, LLC today to discuss your legal needs.