Willys (pronounced ˈwɪlɪs, "Willis" )
was a brand name used by Willys–Overland Motors, an American automobile company, founded by John North Willys. It was best known for its design and production of World War II era and later military jeeps (MBs), as well as civilian versions (Jeep CJs), and branding the 'jeep' military slang-word into the '(Universal) Jeep' marque.
In 1908, John Willys bought the Overland Automotive Division of Standard Wheel Company and in 1912 renamed it Willys–Overland Motor Company. From 1912 to 1918, Willys was the second-largest producer of automobiles in the United States after Ford Motor Company.
In 1913, Willys acquired a license to build Charles Yale Knight's sleeve-valve engine which it used in cars bearing the Willys–Knight nameplate. In the mid-1920s, Willys also acquired the F.B. Stearns Company of Cleveland and assumed continued production of the Stearns-Knight luxury car, as well.
John Willys acquired the Electric Auto-Lite Company in 1914 and in 1917 formed the Willys Corporation to act as his holding company. In 1916, it acquired the Russell Motor Car Company of Toronto, Ontario, and the Curtiss Aeroplane and Motor Company in Buffalo, New York, by 1917, New Process Gear, and in 1919 acquired the Duesenberg Motors Company plant in Elizabeth, New Jersey. The New Jersey plant was replaced by a new, larger facility in Indianapolis, and was to be the site of production for a new Willys Six at an adjacent site, but the depression of 1920–21 brought the Willys Corporation to its knees. The bankers hired Walter P. Chrysler to sort out the mess and the first model to go was the Willys Six, deemed an engineering disaster. Chrysler had three auto engineers: Owen Skelton, Carl Breer, and Fred Zeder (later nicknamed The Three Musketeers) begin work on a new car, commonly referred to as the Chrysler Six.
To raise cash needed to pay off debts, many of the Willys Corporation assets were put on the auction block. The Elizabeth plant and the Chrysler Six prototype were sold to William C.