Short answers, pulled from the story.
Longfellow's first published poem was "The Battle of Lovell's Pond", a patriotic four-stanza piece that appeared in the Portland Gazette on the 17th of November, 1820, when he was 13 years old.
Frances Appleton Longfellow died on the 10th of July, 1861, after her dress caught fire while she was sealing an envelope with hot wax. Longfellow tried to smother the flames with his own body but sustained serious burns himself and was unable to attend her funeral.
Longfellow was the first American to completely translate Dante Alighieri's Divine Comedy. The full three-volume translation was published in the spring of 1867 and went through four printings in its first year.
Longfellow grew a beard after the death of his wife Frances in July 1861. The burns he sustained while trying to save her prevented him from shaving, and he kept the beard for the rest of his life, where it became his trademark.
Harvard University established the Longfellow Institute in 1994 to honor Longfellow's legacy as a translator and anthologist. It is dedicated to literature written in the United States in languages other than English.
Longfellow is buried at Mount Auburn Cemetery in Cambridge, Massachusetts, alongside both of his wives. His first wife Mary had also been interred there after dying in November 1835.