Ogilvy & Mather, one of the world's largest media groups, was founded by David Ogilvy in 1948 and is headquartered in New York City. Ogilvy & Mather is the world's largest media group, founded by David Ogilvy in 1948 and headquartered in New York, with a focus on advertising, media investment management, one-to-one communications, customer relationship management, digital communications, public relations and public affairs, brand image and identity, pharmaceutical marketing and professional communications. Ogilvy & Mather Group consists of Ogilvy & Mather Advertising, Ogilvy & Mather Interactive, Ogilvy PR, Ogilvy & Mather Century, Ogilvy Red Square, Ogilvy & Mather Fashion and other subsidiaries.