Mark Schaefer
Non-Fiction Author
American author, keynote speaker and strategist who became the executive director of Schaefer Marketing Solutions. He has written numerous books including The Content Code, The Tao of Twitter and Marketing Rebellion: The Most Human Company Wins.
He studied journalism at West Virginia University, applied behavioral sciences at Bastyr University and marketing at Claremont Graduate University.
His biggest social media presence is on Twitter where he shares his thoughts with 170,000 followers.
He married his wife Rebecca in September 2009.
Michael Connelly and Martin Cruz Smith are other well-known authors who were born in Pennsylvania.