Robert Addison Day II

Updated Jun 26, 2025

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Ian Oliver Martin

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04/09/2025

Robert Addison Day II

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Robert Addison Day (December 11, 1943 – September 14, 2023) was an American businessman, investor, and philanthropist. He was the founder and former chairman and chief executive officer of Trust Company of the West until 2009. He was the chairman and president of the W. M. Keck Foundation.

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Robert Addison Day II

Robert Day II was born to Williamette Myron Keck and Robert Addison Day, I, and has siblings Howard Brighton Day, Theodore James Day, Tammis Myron Day, and Laurence Hook Day. Robert Day is the father of Joseph Day. Family, friend, or fan, this family history biography is for you to remember Robert Addison Day II.

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