He reunites families for a living. DNA found his own sister.

Blair Clark and his wife, Leah, have spent more than four years reuniting families through their YouTube show, The Leah and Blair Slog, tracking down leads and analyzing old photos for adoptees and Amerasian Filipinos searching for missing parents. This time the search found him. After Blair took a MyHeritage DNA test, the site flagged a 22.7% match with Fiona, a 66-year-old woman in San Antonio, Texas. When Blair was 20, his mother, Isabel, had told him she placed a child for adoption at 19, one of roughly 200,000 U.K. mothers pressured to do so after World War II. Isabel died in 1999. Fiona, raised in Scotland and Bermuda, had signed up for the site a decade earlier and waited. "After 66 years, I have hoped that someone would come find me," she said. The four siblings now plan to meet in Thailand in late 2026. As Blair put it, they can at least grow old together.