Book excerpt: Mississippi author Barry R McCain grew up with stories of his McCain family and old tales of their life in Ireland and Scotland. Senator John McCain and his cousin, novelist Elizabethan Spencer, both include a short history of the McCain family in their respective memoirs 'Faith of our Fathers' and 'Landscapes of the Heart.' Their history is a romantic tale of Highland Scots who supported Mary Queen of Scots and who fled to Ireland after her downfall in 1568. Barry R McCain was the family member who decided to find the McCains in Ireland and discover their real history. The search for the McCains became a mystery story with clues, false turns, many adventures, and then ultimate success through Y chromosome DNA testing. In 2008 the McCains were reunited with their family that remained in Ireland, after 289 years of separation. The author drew from his many experiences on his forty years of travel to Ireland and the UK. There are anecdotal stories, some humorous and others involving "famous" people. His book is part memoir, part history, and explores the relationship between Diaspora and homeland. Finding the McCains is also a genetic genealogy how-to guide for people of Irish and Scottish ancestry.