William Larimer Mellon
Overview
 
William Larimer Mellon, Sr. (1 June 1868 – October 1949), sometimes referred to as W. L., was a founder of Gulf Oil
Gulf Oil
Gulf Oil was a major global oil company from the 1900s to the 1980s. The eighth-largest American manufacturing company in 1941 and the ninth-largest in 1979, Gulf Oil was one of the so-called Seven Sisters oil companies...

.
Born in Pittsburgh, Pennsylvania
Pittsburgh, Pennsylvania
Pittsburgh is the second-largest city in the US Commonwealth of Pennsylvania and the county seat of Allegheny County. Regionally, it anchors the largest urban area of Appalachia and the Ohio River Valley, and nationally, it is the 22nd-largest urban area in the United States...

 on June 1, 1868 to James Ross Mellon, eldest son of Judge Thomas Mellon
Thomas Mellon
Thomas Alexander Mellon was a Scotch-Irish American, entrepreneur, lawyer, and judge, best known as the founder of Mellon Bank and patriarch of the Mellon family of Pittsburgh, Pennsylvania.-Early life:...

, and Rachel Larimer Mellon, daughter of railroad and land baron William Larimer, Jr.
William Larimer, Jr.
William Larimer, Jr. was a Kansas state senator, American settler, and land developer who is best known as the founder of Denver, Colorado in 1858. Larimer often went by "General Larimer", having acquired the title in the Pennsylvania Militia....

 He spent part of his childhood in the West
Western United States
.The Western United States, commonly referred to as the American West or simply "the West," traditionally refers to the region comprising the westernmost states of the United States. Because the U.S. expanded westward after its founding, the meaning of the West has evolved over time...

 with his uncle Andrew W. Mellon
Andrew W. Mellon
Andrew William Mellon was an American banker, industrialist, philanthropist, art collector and Secretary of the Treasury from March 4, 1921 until February 12, 1932.-Early life:...

, who deeply influenced him. In the 1880s he developed an interest in the burgeoning petroleum industry
Petroleum industry
The petroleum industry includes the global processes of exploration, extraction, refining, transporting , and marketing petroleum products. The largest volume products of the industry are fuel oil and gasoline...

 in Pennsylvania
Pennsylvania
The Commonwealth of Pennsylvania is a U.S. state that is located in the Northeastern and Mid-Atlantic regions of the United States. The state borders Delaware and Maryland to the south, West Virginia to the southwest, Ohio to the west, New York and Ontario, Canada, to the north, and New Jersey to...

, but his nascent oil company was bought out by John D. Rockefeller
John D. Rockefeller
John Davison Rockefeller was an American oil industrialist, investor, and philanthropist. He was the founder of the Standard Oil Company, which dominated the oil industry and was the first great U.S. business trust. Rockefeller revolutionized the petroleum industry and defined the structure of...

's Standard Oil
Standard Oil
Standard Oil was a predominant American integrated oil producing, transporting, refining, and marketing company. Established in 1870 as a corporation in Ohio, it was the largest oil refiner in the world and operated as a major company trust and was one of the world's first and largest multinational...

 in 1895.

When oil was discovered in Spindletop
Spindletop
Spindletop is a salt dome oil field located in the southern portion of Beaumont, Texas in the United States. The Spindletop dome was derived from the Louann Salt evaporite layer of the Jurassic geologic period. On January 10, 1901, a well at Spindletop struck oil . The new oil field soon produced...

, Texas
Texas
Texas is the second largest U.S. state by both area and population, and the largest state by area in the contiguous United States.The name, based on the Caddo word "Tejas" meaning "friends" or "allies", was applied by the Spanish to the Caddo themselves and to the region of their settlement in...

 in 1901, the Mellon family invested in the well.
 
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