Born in County Cork and raised primarily in Limerick, Ireland, Fitz-James O'Brien moved to New York City in 1852. Descending from an Anglo-Irish landholding family, O'Brien received his inheritance (estimated at £8000) at about the age of 21. Between 1849 and 1851, it is believed that O'Brien edited a failed literary magazine called The Parlour Magazine of the Literature of All Nations and squandered his inheritance (Wolle 21). Leaving England almost penniless, O'Brien immigrated to America and made the U.S.
Born in rural Chester County, Pennsylvania, Bayard Taylor's ancestors were Quakers with ties to William Penn. Taylor began writing poems as a child and served an apprenticeship at the West Chester Village Record. Rufus Wilmot Griswold, editor of Graham's Magazine, encouraged Taylor to publish his first volume of poetry, Ximena (1844). He traveled to Europe soon after; before leaving, he visited New York and met Nathaniel Parker Willis, a frequenter of Pfaff's and an admirer of Edgar Allan Poe.
The unofficial biographer of the Pfaff’s crowd, William Winter was born in coastal Massachusetts, and his mother died when he was young. Winter attended school in Boston; he also went to Harvard Law School but decided not to practice ("William Winter, 19). By 1854 he had already published a collection of verse and worked as a reviewer for the Boston Transcript; he befriended Pfaffian Thomas Bailey Aldrich after reviewing a volume of his poetry. He relocated to New York in 1856 "because he believed [the city] offered the best field for writers" (Levin 153).