O'Scannlain, Diarmuid F.

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O'Scannlain, Diarmuid F.

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Diarmuid Fionntain O'Scannlain was born in New York, New York, in 1937. In 1957, he earned a bachelor's degree from St. John's University. In 1963, he earned a juris doctorate from Harvard Law School. That same year, he and Maura Nolan were married; they later had eight children. From 1955 to 1978, he served in the U.S. Army Reserve. After passing the New York Bar in 1964, he worked as a tax lawyer for Standard Oil, and in 1965 he came to Portland, Oregon, to join the law firm now known as Stoel Rives. In 1969, he became deputy attorney general for Oregon, and in 1971, he became Oregon public utility commissioner. From 1973 to 1974, he was head of the Department of Environmental Quality, and in 1974, he ran unsuccessfully for the First Congressional District seat in the U.S. House of Representatives. He then returned to private practice. He was on President Ronald Reagan's transition team, and served as Oregon Republican Party chair from 1983 to 1986. He also served on the Northwest Power Planning Council, which is now known as the Northwest Power and Conservation Council. He served as a judge on the United States Court of Appeals for the Ninth Circuit from 1986 to 2016, when he took senior status. In 1992, he also earned a master of law degree from the University of Virginia.


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