He was also a philanthropist, which you can read about here: The Man: Arthur Guinness: Innovator, campaigner and philanthropist. Here is an exerpt:
"A renowned campaigner and social philanthropist, from the beginning Arthur Guinness ensured his business continually gave something back to his employees, the local community, and Dublin. [Something that has continued as the GUINNESS brand has expanded around the globe]. From healthcare and social benefits for employees to contributing to disaster relief projects around the world, Arthur Guinness' philanthropic legacy is something that defines the GUINNESS brand to this day and will be further enhanced and celebrated in 2009."