William “Bucky” Bush, 79, co-founder and chairman of St. Louis-based Bush O’Donnell Investment Advisors, passed away in West Palm Beach, Florida, Tuesday.

The youngest brother of former President George H. W. Bush, and the uncle of former President George W. Bush, he was active in the Missouri Republican Party.

A graduate of Yale University, Bush previously served as president and CEO of Boatmen’s National Bank of St. Louis from 1978 to 1986. He co-founded Bush O’Donnell Investment Advisors in 1988.

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