Who We Are

Greatest Leaders is a partnership registered in the United Kingdom, run by Marcel Bonfim and Mark Williamson.

Marcel Bonfim

Marcel looks after the technical side of everything for Greatest Leaders. He’s also the founder and CEO of a web solutions company (www.historymakers.link), and an experienced leader in business and church circles. He is married to Andrea, has two beautiful children, and lives in Curitiba, Brazil.

Mark Williamson

Mark is responsible for all the content at Greatest Leaders. He’s been involved in training and coaching leaders all over the world since 2005, and is CEO of One Rock (www.onerockinternational.com), a non-profit training young leaders. He’s married to Joanna, and lives in London, United Kingdom.