Ellan Vannin (the Manx-language name of the Isle of Man) is a poem and song, often referred to as "the alternative Manx national anthem", the words of which were written by Eliza Craven Green in 1854 and later set to music by someone called either J. Townsend or F. H. Townend (sources vary).
Source: [1]
The Bee Gees recorded a version for Isle of Man charities. They also included the song in their world-tour as a show of pride in the place of their birth. It was recorded in 1997, and released and re-released as a single, 1998–1999.