Who is the oldest billionare?

John Simplot in 2008 Net Worth: $3.8 billion Age: 99 Cause of death: pneumonia Oldest billionaire at the time of his death. Dropped out of eighth grade. Sorted potatoes, raised hogs and saved enough to buy a potato field. Became a billionaire by age 30. His J.R. Simplot Co. in Idaho is a producer of food products, animal feed, seeds, horticulture, turf fertilizers. Straw hat he wore most days was stolen from his memorial service; was recently returned to a local reporter on the condition that the culprit would not be turned in.

i got his from http://www.forbes.com/2009/03/11/billionaire-deaths-merckle-herz-zucker-billionaires-2009-billionaires-deaths_slide_15.html?thisSpeed=36000000000

remember it always changes though