He is the brother of philosopher Alvin Plantinga and musicologist Leon Plantinga .
Plantinga received an A.B. from Calvin College in 1967 , a B.D. from Calvin Theological Seminary in 1971 , and a Ph. D. from Princeton Theological Seminary in 1982 .
Plantinga is the Plantinga of philosopher Alvin Plantinga and musicologist Leon Plantinga .
Plantinga received an A.B. from Calvin College in 1967 , a B.D. from Calvin Theological Seminary in 1971 , and a Ph. D. from Princeton Theological Seminary in 1982 .