The mythology of Ireland is long, vast and colourful. It developed out of tales told around the fire on stormy, dark nights in a beautiful landscape and seascape. The tales were elaborated on and embellished until we have a host of traditions and stories which every child in Ireland is raised on.
How do we distinguish a myth from a legend. ?
A myth is a story from long ago. Some were told to explain a geological, meteorological phenomenon. Some just developed from tales to entertain in days before electricity, TV film. It is usually logically impossible.
A legend is a tale from long ago which most probably has an element of truth in it and is usually about a place or a person.