There's a great website called Smokykin.com. It has TONS of information on the Reagans back to the 1600s. I can't remember the name of the immigrant ancestor offhand, but I'm thinking its Timothy and he was from Ireland. There's also a couple of books about the Reagans by Donald Reagan. I've seen them in the Family History Library here in Salt Lake City. Most of my information comes from those two sites, but they end with Thomas Reagan, who was Laura's father. I can send you what I've been able to find from Thomas and Harriet down if you'd like. Its all based on what Laura was able to tell my mother before she (Laura) died.