Is the song Danny boy in public domain?

The song "Danny Boy" is not in the public domain. It is a copyright-protected work written by Frederic E. Weatherly in 1910 and composed by Alfred Bunn. The copyright to "Danny Boy" is currently owned by the Frederic Weatherly Estate and will not enter the public domain in the United States until 2086, or 75 years after the author's death in 1945.