Flight of the Earls by Michael K. Reynolds, the first book of The Heirs of Ireland trilogy.
I'm about 60% through it, and it's very good! It's about a brother and a sister, and a friend, who immigrated to New York from Ireland during the 1800's at the start of the potato famine. I love the interesting plot twists, it's not your "typical" immigrant story.
My name is Shari; I have been a Sparker since July 2006, I am now in hospice care for metastatic breast cancer, but I'm not letting cancer stop me from Sparking!
Promise me you'll always remember: You're braver than you believe, and stronger than you seem, and smarter than you think.