Looking for fantasy with an Irish flavor for your St. Patrick’s Day reading? Try one of these:
Daughter of the Forest by Juliet Marillier. Historical fantasy incorporating a retelling of the Seven Swans story, set in early Ireland.
The Copper Crown by Patricia Kennealy-Morrison. First in her Keltiad series about descendents of the Celts who left Ireland and colonized the stars. Sword and sorcery plus space travel. (My favorite in the series is actually The Throne of Scone, the second book, which comes before this one and gives a deep look into the culture of Keltia.)
St. Patrick’s Gargoyle by Katherine Kurtz. “When vandals break into St. Patrick’s Cathedral, a gargoyle named Paddy takes to the streets of Dublin in search of revenge-but nothing could have prepared him for the evil that descends when he finds it.” Fun and not terribly long.