Jacob Ray Harper was born in the covenant on 31 May 1877 in Pleasant Grove, Utah, Utah, United States to Charles Benjamin Harper, age 28, and Harriet Gibbons, age 26. He was the 3rd of 9 children, and the 2nd of 4 sons, born to the couple. His older siblings were: Charles Benjamin, Jr. was born 25 May 1873 and Sarah Elizabeth, born 31 May 1877, also in Pleasant Grove.
Jacob Ray died when he was only 2 months 9 days old on 9 August 1877 in Pleasant Grove. He was buried in August 1877 at Pleasant Grove City Cemetery, which is located at 500 North Main in Pleasant Grove. His plot is A-05-005-10.