Former energy sources manager

Andrew Fisher Ensor, a onetime State Department official who was an authority on Middle Eastern oil policy and negotiated worldwide petroleum prices, died March 4 of heart disease at his home in Washington, D.C., the Washington Post reported. He was 90.

From 1963 to 1966, Ensor worked for the State Department, where he served as director of an office of fuel and energy during the Kennedy and Johnson administrations.

According to the Post, he managed State Department policies on coal, peat and other energy sources. However, Ensor’s primary focus was on the international petroleum business.

After leaving government service, he was based in London from 1966 to 1978 as Middle East director of what was then Mobil Oil Corp.

In that capacity, he negotiated oil prices on behalf of the world’s seven largest oil companies. At the time, petroleum cost little more than $3 a barrel.

Ensor was born in High Wycombe, England, on Jan. 30, 1918. His father, Sir Robert Ensor, wrote the acclaimed “The Oxford History of England.” Andrew Ensor served as a pilot in the Royal Air Force during World War II and graduated from Oxford University’s New College.

Enthralled with the United States as a teenager, he moved to Illinois in the 1940s to marry an American woman he had met in London.

He later worked for Standard Oil of California and American Independent Oil Co. before joining the State Department.

He retired from Mobil in 1983 and later served as an advisor to the White House and Defense Department on oil policy and Middle Eastern affairs.