Catharine Amanda Leaman (maiden name: Slaymaker) was born on May 9, 1815, in Pennsylvania to William and Elizabeth Slaymaker. She married Henry Leaman around 1835, and they had at least six children: Mary, born on October 18, 1836; William, born on February 12, 1838; Henry, born on July 3, 1839; John, born around 1841; Charles, born on September 3, 1845; and Rosh, born on December 21, 1854. They lived in Paradise, Pennsylvania, and her husband worked as a farmer and hotel owner. By 1860, they owned $27,000 of real estate and $1,960 of personal property.
A decade later, their wealth had grown to $30,000 of real estate and $21,000 of personal property. A local writer described her as a “most estimable woman [who was] highly respected in the community.” She was a devout Presbyterian who “took much interest in church affairs.” Her husband died on May 16, 1887. In December 1894, she probably suffered a stroke, which rendered her “right side…useless” and “deprived her of her speech.” She died in Paradise on January 5, 1894.