More than for most firms, the story of DLA Piper—which advances to the top of The Am Law 100′s gross revenue rankings for the first time this year—is a Plantagenet-style saga of marriages, strategic alliances, and ventures into new lands. The British side of the operation has a particularly long history, tracing its founding back to the creation of Barnard & Bolland in Leeds in 1764. The firm’s modern chapter, meanwhile, began in the 1990s, with the creation of Dibble Lupton Alsop in the United Kingdom, Gray Cary Ware & Freidenrich in California, and Piper Marbury Rudnick & Wolfe in Baltimore and Chicago. "DLA Piper has grown to become the biggest law firm in the world, but our values remain the same," says DLA joint CEO Nigel Knowles. "Client service is at the heart of what we do." This two-piece interactive graphic offers a journey through the respective histories of the three firms that combined to form DLA Piper in 2005 (top, below) and a timeline that details the tie-ups, alliances, and partnerships it has entered in the years since to expand its sphere of influence to Africa, the Middle East, Australia, and other parts of the world.