Cornelius Plantinga is a Christian theologian and is President and Charles W. Colson Professor of Theology at Calvin Theological Seminary. Plantinga has an AB from Calvin College (1967), a BD from Calvin Theological Seminary (1971), and a PhD from Princeton Theological Seminary (1982). His dissertation was The Hodgson-Welch Debate and the Social Analogy of the Trinity. Plantinga is an ordained minister in the Christian Reformed Church, and is the brother of the Christian philosopher, Alvin Plantinga. Cornelius is also an avid defender of social trinitarianism.