David du Plessis (* 1905, + January 31, 1987) was a Pentecostal minister (most of his life affiliated with Assemblies of God), who is considered to be one of the founders of the Charismatic movement.
One of his biggest accomplishments was to communicate with Catholic church and he was the only Pentecostal observant at the Second Vatican Council.
Some URLs for more documents about David du Plessis:
http://www.holytrinitynewrochelle.org/yourti19217.html
http://www.fuller.edu/archive/html/duplessis_scope.htm
His picture may be found on http://www.fuller.edu/archive/, but the copyright status of the picutre is unknown.