Did you see this story about the use of genetic genealogy to identify one of the children who died in the sinking of the Titanic?
Five days after the passenger ship the Titanic sank, the crew of the rescue ship Mackay-Bennett pulled the body of a fair-haired, roughly 2-year-old boy out of the Atlantic Ocean on April 21, 1912. Along with many other victims, his body went to a cemetery in Halifax, Nova Scotia, where the crew of the Mackay-Bennett had a headstone dedicated to the "unknown child" placed over his grave.
The rest of the wire story is here, including details about the mitochondrial DNA used to identify the little boy as Sidney Leslie Goodwin, a 2-year-old who was traveling with his parents, Frederick and Augusta, and five siblings from England to Niagara Falls, New York. None of the Goodwins survived the sinking, and no bodies besides the newly identified Sidney's were ever recovered.
RIP, Goodwin family.