Florilla S. Palmer (maiden name: Sumner) was born on June 27, 1808, in Hebron, Connecticut, to William and Jemima Sumner. She married Elliot Palmer on December 26, 1831, and they had at least four children: William, born around 1834; George, born around 1838; Loomis, born around 1844; Francis, born around 1845. They lived in Stafford, Connecticut, and her husband worked as a Congregationalist minister. By 1850, they owned $1,800 of real estate. They moved to Newark, New Jersey, in the 1850s, and by 1860, they owned $3,500 of real estate and $1,300 of personal property.
At least two of her sons served in the Union army. In December 1862, after the Battle of Fredericksburg, she confessed that she was "full of anxiety in relation to Loomis[.] I have never, at any time been so distressingly anxious as I am now." Despite her anxiety, she staunchly supported the Union war effort. In May 1864, she wrote proudly that her sons had "so long and so nobly worn [soldiers' uniforms] in defence of our beloved country, for the maintainance of the best government in the world." Both sons survived the war. The family moved to Portland, Connecticut, in the 1860s. By 1870, they owned $2,500 of real estate and $1,140 of personal property. She died in Portland on May 5, 1871.