Florence Earle Coates was born on July 1, 1850, in Philadelphia, Pennsylvania. She married Edward H. Coates in 1879, and she served as a leader in multiple social organizations, including the Society of Mayflower Descendants. Her poems began appearing in magazines in the 1890s, and she published her first poetry collection, Poems (Houghton Mifflin), in 1898. Coates was also the author of Pro Patria (Philadelphia, 1917), a collection of poems about World War I; The Unconquered Air (Houghton Mifflin, 1912); Lyrics of Life (Houghton Mifflin, 1909); and Mine and Thine (Houghton Mifflin, 1904). She was named the poet laureate of Pennsylvania in 1915. She died on April 6, 1927, in Philadelphia.