<P> John Davison Rockefeller Sr. ( July 8 , 1839 -- May 23 , 1937 ) was an American oil industry business magnate , industrialist , and philanthropist . He is widely considered the wealthiest American of all time , and the richest person in modern history . </P>
<P> John Davison Rockefeller Sr. ( July 8 , 1839 -- May 23 , 1937 ) was an American oil industry business magnate , industrialist , and philanthropist . He is widely considered the wealthiest American of all time , and the richest person in modern history . </P>
who became the tycoon of the oil industry
who became the tycoon of the oil industry
John Davison Rockefeller Sr.
John Davison Rockefeller Sr.