He is founder and senior managing partner of Freeh Group International, a global risk-management consulting firm based in Wilmington, and its affiliated law firm, Freeh, Sporkin & Sullivan L.L.P., based in Washington.

Thomas L. du Pont, 60, a board member since 2006, resigned from the board, citing business and family considerations, the company said.

Nathan J. Gordon has been elected president-elect of the American Polygraph Association, an international professional organization. The South Philadelphia native will begin his term in 2010. Gordon is president of Keystone Intelligence Network, a private investigative firm in Philadelphia, and director of the Academy for Scientific Investigative Training.

Mitchell L. Morgan has been named to the board of trustees of the National Museum of American Jewish History, a nonprofit cultural organization based in Philadelphia. He is president and chief executive officer of Morgan Properties, King of Prussia.

Philadelphia Theatre Company has elected Priscilla M. Luce president of its board. She is president of The Albert M. Greenfield Foundation, Levittown. Michael M. Coleman, former board president, joins E. Gerald Riesenbach as the new co-chairmen. Coleman is principal at Coleman/Nourian Search L.L.C., Philadelphia. Riesenbach is a lawyer at Cozen O'Connor, Philadelphia.

Also named to the board to three-year terms:

Brigitte Daniel is executive vice president of Wilco Electronics Systems Inc., responsible for corporate communications, government affairs, regulatory affairs, public affairs, and corporate administration.

Alice L. George is an author and independent historian with a doctorate in history from Temple University and is a former deputy managing editor of the Philadelphia Daily News.

Glenn A. Gunderson is chairman of the trademark practice at Dechert L.L.P., Philadelphia.

Sally Lyn Katz has taught math and computer science for several years, most recently at Friends' Central School, and serves on five boards at the University of Pennsylvania.

Kevin Casey has been elected to the board of the Federal Circuit Historical Society, a nonprofit Washington organization that promotes public awareness of the history and heritage of the U.S. Court of Appeals for the Federal Circuit. He is a partner and chairman of two groups at Stradley, Ronon, Stevens & Young L.L.P., Philadelphia.

The Philadelphia School, a Center City independent school for children in preschool through eighth grade, has named Harry M. Roth president. He is a lawyer and managing partner at Cohen, Placitella & Roth P.C., Philadelphia.

The following have been named to the board of trustees:

Michael Berman is senior vice president at The Strategy Group, Philadelphia.