When Oscar Ivan Chenoweth was born on 2 July 1892, in South Dakota, United States, his father, John Andrew Chenoweth, was 41 and his mother, Emelia Ann "Milly" Bundy, was 35. He married Gertrude Powell about 1916, in United States. They were the parents of at least 2 sons. He lived in McMinnville, Yamhill, Oregon, United States in 1930 and Election Precinct 19 North McMinnville, Yamhill, Oregon, United States in 1940. He died on 29 May 1944, in San Francisco, California, United States, at the age of 51, and was buried in Willamette National Cemetery, Portland, Multnomah, Oregon, United States.
Cornish: topographic name from the elements chy ‘house’ + noweth ‘new’.