Christian Karl Gerhartsreiter, aka Clark Rockefeller

Christian Karl Gerhartsreiter, aka Clark Rockefeller (Booking Photo, Boston PD)

SAN MARINO, Calif. -- A man serving 5-years for kidnapped his daughter while impersonating a member of the famed Rockefeller clan says he will not fight extradition to California to face murder charges.

Christian Karl Gerhartsreiter aka. Clark Rockefeller is charged in the 1985 killing of his landlord Jonathan Sohus, a 26-year-old computer programmer who mysteriously disappeared with his wife, Linda.

Gerhartsreiter, 50, is charged with the murder of Jonathan Sohus, a 26-year-old computer programmer who mysteriously disappeared with his wife, Linda.

Sohus dismembered remains were found nine years later as workers dug a backyard pool at a home his mother used to own in San Marino.

Linda Sohus, then 28, has never been found.

Except for a few postcards that appeared to have been mailed by the couple from Paris in 1985, her friends and family have not heard from her since.

Gerhartsreiter is serving a four- to five-year sentence in Massachusetts for kidnapping his 7-year-old daughter in 2008.

He becomes eligible for parole in 2012.

Gerhartsreiter has denied any involvement in the Sohus case.

The new charges deal with events in Gerhartsreiter's life before he assumed the identity of Clark Rockefeller, a cultured poseur who never seemed to have a job.

A Boston tabloid dubbed him "Crockefeller."

Gerhartsreiter came to the United States from Germany in 1978, according to testimony at his kidnapping trial. After spending a few years in Connecticut, he moved to Wisconsin, where he married in a green card arrangement using his true name.

Gerhartsreiter then relocated to California, where he began living a life of lies, according to numerous media accounts.

He settled in San Marino, a wealthy community near Pasadena, where he lived under the name of Christopher Chichester from 1983 to 1985.

He posed as a film student and boasted that he was of English royalty, according to Vanity Fair magazine, which profiled him in January 2009 and quoted several people who knew "Chichester" at the time.

As Chichester, he rented a guest house from Ruth "Didi" Sohus. Her son John and his wife, Linda, came to live with Didi during the time Gerhartsreiter lived in the guest quarters.

It is unclear what his relationship was with the couple.

Didi Sohus told investigators she believed that her son and daughter-in-law were in Europe. She filed a missing person report in July 1985, according to the Pasadena Star-News.

Didi and one of Linda Sohus' friends received postcards postmarked from Paris in mid-1985, purportedly from the couple, but investigators were suspicious of their authenticity.