John D. “Jay” Rockefeller IV, the great-grandson of the Standard Oil founder, served as a US senator for West Virginia for three decades

John D. “Jay” Rockefeller IV, a former US senator and descendant of one of America’s wealthiest and most influential families, has died at the age of 89.

Rockefeller died on Friday at his home in Washington, DC, the Washington Post reported. His family did not disclose the cause of death, according to the newspaper.

A Democrat, Rockefeller represented West Virginia in the US Senate for three decades, from 1985 to 2015, after serving two terms as governor.

He was the great-grandson of John D. Rockefeller, the founder of Standard Oil and one of America’s richest industrialists.…