When Mary Katherine Sage was born on 2 January 1842, in Oldham, Kentucky, United States, her father, Daniel Harrison Sage, was 39 and her mother, Janet Dye, was 25. She married Irvin I. Pemberton on 7 June 1866, in Dallas, Dallas, Texas, United States. They were the parents of at least 1 son. She lived in Dallas, Dallas, Texas, United States for about 10 years. She died in 1920, in Hunt, Texas, United States, at the age of 78, and was buried in Royse City Cemetery, Royse City, Rockwall, Texas, United States.