Faculty & Staff

Leadership Team

Todd M. Johnson, Ph.D., Co-Director

Todd M. Johnson is Associate Professor of Global Christianity and Director of the Center for the Study of Global Christianity at Gordon-Conwell Theological Seminary. Johnson is visiting Research Fellow at Boston University’s Institute for Culture, Religion and World Affairs leading a research project on international religious demography. He is co-editor of the Atlas of Global Christianity (Edinburgh University Press) and co-author of the World Christian Encyclopedia (Oxford University Press, 2nd ed.) and World Christian Trends (William Carey Library). He is co-editor of the World Christian Database (Brill) and World Religion Database (Brill).

Contact: [email protected]

Gina A. Zurlo, Ph.D., Co-Director

Gina A. Zurlo is Associate Director of the Center for the Study of Global Christianity and received her Ph.D. from Boston University in 2017. Her research focuses on the intersection between international religious demography, world Christianity, and the history of the social scientific study of religion. She is also a Visiting Research Fellow at Boston University’s Institute on Culture, Religion and World Affairs, where she is co-editor-in-chief of the Journal of Religion and Demography and works on the World Religion Database (Brill).

Contact: [email protected]

Peter F. Crossing, Data Analyst

Peter F. Crossing’s background as a professional forester in Australia has proven useful when re-applied to the task of tracking disciples of Jesus Christ in all nations. He has a Diploma of Theology (Missiology) from the Australian College of Theology at WEC’s Missionary Training College and has gained further computer mapping and database expertise through work at the Sydney Centre for World Mission, the National Church Life Survey, and Mapinfo Australia. These positions led to a role as data analyst for the World Christian Database, from which came the World Christian Encyclopedia, World Christian Trends and now the Atlas of Global Christianity. He is married with two daughters and a son and lives near Sydney, telecommuting daily to Boston’s Center for the Study of Global Christianity.

Design Team

Chris Guidry

Christopher R. Guidry, Design Consultant

A graduate of the United States Military Academy (USMA) at West Point, immersed in print production experience at Last Days Ministries (LDM), and secunded from Youth With A Mission (YWAM), Christopher R. Guidry started in a 3-month position scanning images for Dr. Johnson and Dr. Barrett in the fall of 1996 for the World Christian Encyclopedia. Over the next six years, Chris migrated into page layout, print production, and other technical aspects of developing such data-heavy works. Highlights of his time include service as the associate editor of World Christian Trends, page layout for the Atlas of Global Christianity, and production assistance on various other publications. Chris, his wife, Jeanine, and their three dogs live in Richmond, Virginia.

Chris Guidry

Bryan Nicholson, M.S., Cartographer/Geographer

Bryan Nicholson is a Cartographer/Geographer working on the Design Team at the Center for the Study of Global Christianity. He is a graduate of Clemson University (B.S. in Management) and the University of Georgia (M.S. in Geography). His studies focused on cartography, geographic information systems (GIS), and cultural geography. He has designed maps and data visualizations for many organizations and publications through his project, cartoMission. He also teaches as an adjunct Geography instructor in Colorado Springs, CO.

Research Associates

Bradley A. Coon, M.A.

Bradley A. Coon is a research associate at the Center for the Study of Global Christianity and was the Information Designer for the Atlas of Global Christianity. He is currently pursuing a Doctor of Ministry in Global Christianity and World Evangelization at Gordon-Conwell Theological Seminary. He works in the seminary’s stewardship office as a Special Grant and Advancement Systems Manager. He lives with his wife in Ipswich, Massachusetts.

Research Assistants

Alejandra Fontecha

Ale was born in Colombia (South America) and raised in Nashville, Tennesse and holds a Bachelors of Science in Exercise Science. She volunteered for four years at the Tennesse Prison for Women as an English as a Second Language teacher and is now a student at Gordon-Conwell Theological Seminary pursuing a Masters in Counseling and a Masters in Religion with a concentration in Womanist Theology. In her spare time, Ale climbs mountains and loves a good hiking challenge. She also plays soccer and loves to be outside.


Michael Hahn

While working in real estate finance, Michael led community groups in Los Angeles for nearly a decade through his local church. It was there where he became passionate about promoting biblical literacy and spiritual growth among the distracted and impossibly-busy. In 2017, he packed up his career and drove across the country to study as a Master of Divinity student at Gordon-Conwell Theological Seminary.  He currently works as a part-time Research Assistant for the Center for the Study of Global Christianity. Michael holds a B.A. in Political Science from the University of California at Los Angeles.

Amanda Perkins

Amanda grew up in Boston in the globally-oriented ministry of Park Street Church. She is an undergraduate at Bowdoin College in Maine, pursuing a B. A. in History and Environmental Studies with a particular interest in comparing urban life through space and time. Amanda loves data and design and is excited to work with the CSGC over the summer of 2017 to research Christian life and denominations globally and share valuable CSGC information through digital outreach. When she graduates next year, Amanda hopes to continue to pursue creative crossovers between Christianity and her interests in people, research, and design.