Lori Erica Ruff

Ruff's true origins remained a mystery until 2016, when her identity was confirmed using a combination of public records and direct-to-consumer autosomal SNP analysis of her husband's and daughter's DNA, leading back to the McLean–Cassidy family on Philadelphia's Main Line.

After her death, her husband and his family found the evidence of her falsified identity in a lock box in her closet. A 2013 Seattle Times feature article about the case was published in news outlets around the world and created enormous interest in the online "websleuth" community.

In September 2011 the Ruff family, with the help of a congressional aide, sought the help of Joe Velling, an investigator for the Social Security Administration (SSA). Velling agreed to help identify her as a case of identify theft. After following numerous leads he was stumped, and sought the help of the general public to identify her through an article published June 22, 2013, in The Seattle Times. The article was subsequently republished in numerous newspapers around the world.

Colleen Fitzpatrick, a former nuclear physicist who created the field of forensic genealogy, learned of Lori Ruff in 2013 and began work on the case. Fitzpatrick had Ruff's husband and daughter tested by a direct-to-consumer testing company, through which she was able to obtain Ruff's DNA results using genetic genealogy phasing techniques, which essentially subtracted Blake Ruff's DNA from Lori's. Ruff had a first cousin named Cassidy on her list of matches; however, the name was very common and the cousin was not responsive. After two years, Fitzpatrick finally identified Ruff when she discovered a third cousin match who was related to the Cassidys. Knowing the identity of the third cousin led her to Ruff's identity.

Ruff gradually acquired more documents in her new name, including a Social Security number. After earning a GED and a college degree, she married into a wealthy East Texas family and gave birth to a daughter. Due to her off-putting, secretive behavior, she clashed with her husband's family, and her marriage eventually collapsed. She died by suicide in the driveway of her former in-laws' home in Longview, Texas, on Christmas Eve 2010. Authorities believe she initially traveled to the home with the intent of harming the family.

On December 24, 2010, Ruff's body was discovered in her car in the Ruffs' driveway, dead from a self-inflicted gunshot. In the car were two suicide notes: One 11‑page note addressed to "my wonderful husband" and another addressed to her daughter, to be opened on her 18th birthday. The Ruffs opened and read the letter, but it contained only "ramblings from a clearly disturbed person" and no details about Lori's past.

After getting married, the Ruffs moved to Leonard, Texas. They tried several times to have a child, but she had trouble conceiving and suffered multiple miscarriages. This led investigators to believe that Ruff was older than she claimed, although the difference turned out to be less than a year. She eventually gave birth to a baby girl via in vitro fertilisation in 2008.

In 2003 McLean met Jon Blakely "Blake" Ruff, the son of a socially prominent family in East Texas, in a Bible study class. Ruff described her as being incredibly secretive, particularly regarding her past. She had told him she was from Arizona, that both her parents were dead, that she had had an unhappy childhood, and that she had no siblings; she also said her father had been a failed stockbroker. The couple eloped in January 2004 after Nancy Ruff, Blake's mother, inquired about placing a wedding announcement in the local newspaper. The only person in attendance at their wedding ceremony, held in a church outside Dallas, was the officiating preacher.

In May 1988, McLean obtained the birth certificate of Becky Sue Turner, a two-year-old girl who had died, along with two of her siblings, in a house fire in Fife, Washington in 1971. McLean requested the birth certificate in Bakersfield, California, Becky Sue Turner's birthplace. She then traveled to Idaho, where she used the document to obtain a state ID card on June 16.

McLean, posing as Becky Sue Turner, then appeared before a judge in Dallas on July 5, 1988, and legally changed her name to Lori Erica Kennedy. A week later, she obtained a Social Security number, removing traces of her true identity. She also took a birth date of July 18, 1969. She received a Texas driver license in 1989 and qualified for a GED the following year. She enrolled in Dallas County Community College, and in 1997 she graduated from the University of Texas at Arlington with a degree in business administration.

Kimberly Maria McLean, a.k.a. Lori Erica Kennedy Ruff (October 16, 1968 – December 24, 2010), was an American identity thief whose true identity remained unknown for nearly six years after her death. She was eventually identified as a native of suburban Philadelphia who left home at age 17, in the fall of 1986, because she did not get along with her mother and stepfather. Within the next two years, she obtained the birth certificate of Becky Sue Turner, a two-year-old girl who had died with her two sisters in a house fire in 1971. McLean used the child's birth certificate to obtain an Idaho state identification card, then moved to Texas and had her name legally changed to Lori Erica Kennedy.