Arthur was the son of Judge Charles H. Cooper and also the brother of the actor Gary Cooper. Arthur was in the banking business.
Arthur was born 15 January 1895 in Helena, Montana, the son of Charles Henry Cooper and Alice Louisa Brazier.[1]
He attended Dunstable Grammar School in England, and was also on the school's shooting team. He and his brother were excellent marksmen, having to learn to handle guns from an early age on their father's ranch in Montana.[2]
He married Ethel Pauline "Jane" Carpenter on 12 March 1920 at Great Falls, Montana.[3] They were the parents of a daughter, Georgia May (1923-2007)[4] and a son, Howard LeRoy Cooper (1926-2012).[5] His wife died 28 April 1928 in Helena, when Arthur was 33 years of age.
On 5 September 1929 he married Emma Jean Strayer in Waterloo, Iowa.
His death came 15 May 1982 in Los Angeles. He was 87.[6]
Sources
↑ "Montana, County Births and Deaths, 1840-2004," database with images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/QKNR-LX94 : 20 October 2015), Arthur Leroy Cooper, 15 Jan 1895; citing Birth, Helena, Lewis and Clark, Montana, United States, various county recorder offices; FHL microfilm 2,314,615.
↑ "Montana, County Marriages, 1865-1950," database with images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/F3QR-HV5 : 7 December 2014), Arthur Leroy Cooper and Ethel Pauline Carpenter, 15 Sep 1920; citing Marriage, Great Falls, Cascade, Montana, county courthouses, Montana; FHL microfilm 1,940,168.
↑ "Montana, County Births and Deaths, 1840-2004," database with images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/QKNR-GGR4 : 20 October 2015), Arthur Leroy Cooper in entry for Georgia Mae Cooper, 18 Jan 1923; citing Birth, Helena, Lewis and Clark, Montana, United States, various county recorder offices; FHL microfilm 2,314,681.
↑ "Montana, County Births and Deaths, 1840-2004," database with images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/QKNR-LSTP : 20 October 2015), Arthur Le Roy Cooper in entry for Howard Le Roy Cooper, 06 Jun 1926; citing Birth, Helena, Lewis and Clark, Montana, United States, various county recorder offices; FHL microfilm 2,314,613.
↑ "California Death Index, 1940-1997," database, FamilySearch (https://familysearch.org/pal:/MM9.1.1/VGBR-ZV5 : 26 November 2014), Arthur Leroy Cooper, 15 May 1982; Department of Public Health Services, Sacramento.
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