In the Clan Kincaid DNA Project, 140 people with the surname Kincaid (or variations thereof) have taken DNA test to find their ancestors and trace their family tree.
But among the cool stuff (like finding out war heroes and survivors of the Irish potato famine as their ancestors), they've also opened the Pandora box of lies and secrets:
They have also stumbled upon bastards, liars and two-timers.
Much of it is ancient history, long-dead ancestors whose dalliances are part of the intrigue of amateur genealogy. But sometimes the findings strike closer to home.
In one case, two brothers were surprised to discover they had different fathers. They confronted their elderly mother, who denied the most obvious possibilities -- that she had been unfaithful to her husband, the man they had always known as Dad, or that one son was adopted.
"It has been traumatic for some to discover their true lineage through the DNA tests," said Don Kincaid, a 76-year-old Texan who oversees the Kincaid surname project and witnessed the brothers' ordeal.
As genetic testing becomes more widespread for medical information, forensics and ancestral research, more people are accidentally uncovering family secrets. Among the most painful are so-called "non-paternity events," cases in which Dad turns out to be someone else.
Alan Zarembo of the Los Angeles Times has the story: Link