The two exchanged letters and poetry for some time before discussing engagement. After Poe lectured in Providence in December 1848, reciting a poem by Edward Coote Pinkney directly to Whitman, she agreed to an "immediate marriage".[11] Poe agreed to remain sober during their engagement — a vow he violated within only a few days. Whitman's mother discovered that Poe was also pursuing Annie Richmond and childhood sweetheart Sarah Elmira Royster. Even so, the wedding had come so close to occurring that, in January 1849, a newspaper in New London, Connecticut and others announced their union and wished them well.[12] At one point, they chose the wedding date of December 25, 1848,[13] despite criticism of the relationship from friends and enemies alike. Whitman supposedly received an anonymous letter while she was at the library suggesting that Poe had broken his vow to her to stay sober, directly leading to an end of the relationship. Poe said in a letter to Whitman (addressed "Dear Madam") that he blamed her mother for their split.[9] Rufus Wilmot Griswold, Poe's infamous first biographer, claimed that Poe purposefully ended his relationship with Whitman the day before their wedding by committing unnamed drunken "outrages"[14] that, as he wrote in his biography, "made necessary a summons of the police".[15]