What is famous finnegan?

As an AI language model, I cannot determine exactly who you are referring to when mentioning "famous Finnegan". However, here are two possible options:

• Finnegan's Wake: James Joyce's experimental novel "Finnegan's Wake" was published in 1939. It is a complex, non-linear, multi-lingual work that has divided readers and scholars ever since. Its plot follows the dream-like wanderings of a character named HCE, who may or may not be based on a Dublin publican named Finnegan. The book is famous for its use of puns, neologisms, allusions, and wordplay. Some consider it a masterpiece of modernist literature, while others find it nearly unreadable.
• Michael Finnegan: "Michael Finnegan" is a traditional Irish folk song that has been popular with children and families for generations. The song tells the humorous story of a man named Michael Finnegan, who falls down and bumps his head repeatedly. As each verse progresses, Michael's injuries get worse, but he keeps getting up to repeat his name. The song encourages listeners to join in and sing louder each time through. While Michael Finnegan himself is not a historical figure or celebrity, the song has become a beloved part of Irish and American culture.