Donnell Legacy

Three generations of the Donnell family guided the company from 1911 to 1972 and left a lasting mark on both the business and the city of Findlay through a continuity of values and a focus on the community. Under wildcatter James C. "J.C." Donnell, Ohio Oil brought in thousands of oil and gas wells, established a pipeline network, and expanded west into Wyoming and Montana. Otto Dewey "O.D." Donnell, who took over in 1927, directed expansion into Texas and Oklahoma and moved into refining and marketing, while the idea took root during his tenure that a company had responsibility for the welfare of its employees and the communities where it operates. James C. "Jim" Donnell II, president from 1948 to 1972, led the transition from Ohio Oil to Marathon Oil Company and guided it toward becoming a global, fully integrated oil company.

Findlay, Ohio · United States