Roy Jackson , whose grandfather William Rockefeller was once the president of Standard Oil , and his wife , Gretchen , have spared no expense when it comes to Barbaro 's recovery .
William Rockefeller
Standard Oil
/business/person/company
Standard Oil
William Rockefeller
/business/company/founders
PERSON
Roy Jackson
PERSON
William Rockefeller
ORGANIZATION
Standard Oil
PERSON
Gretchen
PERSON
Barbaro