Lowell was born into Brookline's prominent Lowell family. One brother, Percival Lowell, was a famous astronomer who predicted the existence of the dwarf planet Pluto; another brother, Abbott Lawrence Lowell, served as President of Harvard University.She never attended college because it was not deemed proper for a woman by her family, but she compensated for this with her avid reading, which led to near-obsessive book-collecting. She lived as a socialite and travelled widely, turning to poetry in 1902 after being inspired by a performance of Eleonora Duse in Europe. Her first published work appeared in 1910 in Atlantic Monthly. The first published collection of her poetry, A Dome of Many-Coloured Glass, appeared two years later.Lowell was said to be lesbian, and in 1912 she and actress Ada Dwyer Russell were reputed to be lovers. Russell was Lowell's patron. Russell was the subject of her more erotic work. The two women traveled to England together, where Lowell met Ezra Pound, who at once became a major influence and a major critic of her work. Lowell has been linked romantically to writer Mercedes de Acosta, but the only evidence that they knew each other at all is the brief correspondence between them about a memorial for Duse that never took place.Lowell was an imposing figure who kept her hair in a bun and wore a pince-nez. She smoked cigars constantly, claiming that they lasted longer than cigarettes. A glandular problem kept her perpetually overweight, so that poet Witter Bynner once said, in a cruel comment repeated by Ezra Pound and thereafter commonly misattributed to him, that she was a "hippopoetess." Her writing also included critical works on French literature and a biography of John Keats.Lowell's fetish for Keats is well-recorded. Pound, amongst many others, did not think of her as an imagist but merely a rich woman who was able to financially assist the publication of imagist poetry, which became weak after Pound's "exile" towards Vorticism. Lowell was an early adherent to the "free verse" method of poetry.Lowell died of a cerebral hemorrhage in 1925 at the age of 51. The following year, she was awarded the Pulitzer Prize for Poetry for What's O'Clock. Forgotten for years, there has been a resurgence of interest in her work, in part because of its focus on lesbian themes and her collection of love poems addressed to Ada Dwyer Russell, but also because of its personification of inanimate objects, such as in The Green Bowl, The Red Lacquer Music Stand, and Patterns.