When Ethel Chippett Mills was born in 1912, in Newfoundland, Canada, her father, Joshua Mills, was 49 and her mother, Sarah Chippett, was 40. She married Rodney Rideout in 1930, in Lewisporte, Newfoundland and Labrador, Canada. She lived in Moretons Harbour, Newfoundland and Labrador, Canada in 1921. She died in 1950, in Lewisporte, Newfoundland and Labrador, Canada, at the age of 38.