Hi Everyone,
Not from Ireland but from Poland, but I think I can help you with this sportsman.
1. This song was written in the early part of 20th century and is originated in County Cork.
2. The bould Thady Quill is rumoured to have lived in the Mushra Mountains near Macroom, Co. Cork.
3. Muskerry (!) is a part of Mushra Mountains.
These places can be found on my road map of Ireland.
Bye Folks !