Pope John Paul II

PJPII with ClintonPope John Paul II experienced tremors and stiffness for years before revealing that he had Parkinson's disease in 2005. He was treated with L-Dopa, a drug that boosts levels of dopamine in the brain. But this course of treatment was started late and halted prematurely, compounding his cognitive dysfunction in the last months of his life.

http://abcnews.go.com/GMA/story?id=126945&page=1