About William P. Trimble
Lived 1863 – 1943 (aged 79–80). William P. Trimble was a politician and businessperson.
William Pitt Trimble (February 2, 1865 March 19, 1943)Efn|Sources disagree on Trimble's exact birthdate. Trimble's biographical entry in History of Washington lists his birthdate as being February 2, 1865, while HistoryLink records him as having been born in 1863.
As a child, he studied in public schools in Kentucky and Ohio, along with Paris' École Alsacienne. In 1899, he was involved in a legal dispute with the state of Washington relating to the jurisdiction of the Washington Board of Land Commissioners, and in 1903 he sued King County, arguing that land he owned was not eligible for condemnation. By 1904, Trimble's real estate business was so successful that he was listed as one of the wealthiest men in Seattle.
In 1908, Trimble ran for Mayor of Seattle as a Republican. Throughout his campaign, he was viewed as a strong contender and was endorsed by The Seattle Republican. He came second in the primary, losing the party's nomination to John F. Miller, who would go on to win the general election as well. An op-ed in The Seattle Republican later attributed Trimble's loss to being endorsed by The Seattle Times. Trimble later served as a presidential elector for the 1908 United States presidential election. The mayoral campaign was good for Trimble's reputation and for the next year he was regularly suggested as a candidate for the United States Senate.
In 1911, Trimble announced his candidacy for Governor of Washington, citing high taxes, infrastructure, and women's rights as key issues in his campaign. Shortly after his announcement, The Idaho Republican alleged that he had enclosed money with his campaign announcements but requested newspapers not label the announcement advertising, and Trimble's name did not ultimately appear on the ballot. Trimble remained somewhat active in politics, advocating for the construction of a transit system in Seattle, serving on the cities' charter commission, and arguing against changing the name of Mount Rainier.
In 1925, while serving as Seattle's planning commissioner, Trimble revived his transit advocacy, proposing a $4,000,000 investment in a city-wide transit system . His "Rapid Transit" plan was approved in August 1926, however, the project was plagued with financial issues. Trimble lost a significant portion of his wealth in the Wall Street crash of 1929. In 1917, he and his family moved to a newly constructed mansion there. They were the first family to move to the island, and Trimble acted as the island's postmaster and handled the bi-weekly delivery of supplies to the island.
The family moved back to Seattle in 1924 but continued to use their home on the island as a vacation residence. After his wife's death in 1929, Trimble never returned to Blake Island.
In 1948, several years after Trimble's death, the mansion on Blake Island burnt down in a fire.
Personal life Trimble married his wife, Cannie Webb Ford, in 1897. He had five children. Cannie was killed in an automobile accident on December 7, 1929, when the family car crashed into Elliott Bay.
Trimble was an aviation enthusiast and president of a Seattle-area aviators club. In 1909, he became one of the first men in the Pacific Northwest to own an airship, saying "Within the next ten years airships will be as common as automobiles."
Trimble died on March 19, 1943.
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Important facts
People in William P. Trimble's life
Named in this biography and alive at the same time
Contemporaries
People whose lives overlapped William P. Trimble's
Frequently asked questions
Who was William P. Trimble?
American attorney and businessman (1863–1943)
When was William P. Trimble born?
William P. Trimble was born in 1863.
When did William P. Trimble die?
William P. Trimble died on 19 March 1943.
What was William P. Trimble's occupation?
William P. Trimble was a politician and businessperson.
Sources & further reading
· Wikipedia: William P. Trimble
· DBpedia: William Pitt Trimble
Cite this page
APA: Biography.guide. (2026). William P. Trimble. https://biography.guide/william-p-trimble/
MLA: "William P. Trimble." Biography.guide, https://biography.guide/william-p-trimble/.
Chicago: "William P. Trimble." Biography.guide. https://biography.guide/william-p-trimble/.
Data last updated: 2026-09-21 · Spot an error? Report a correction.
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