Above Photos: Mildred "Patty" BaenaThe mother of Arnold Schwarzenegger's mystery love child was identified late Tuesday as 50-year-old housekeeper Mildred "Patty" Baena.
Multiple outlets including TMZ.com and Radaronline.com identified the woman citing anonymous sources.
Baena described herself as a "proud parent" with a body type that included "some extra baggage" in a MySpace.com profile that included photos of her with a young boy.
The boy bears more than a passing resemblance to the "Terminator" actor, with an eerily similar gap-toothed grin and flowing sandy blond curls like Schwarzenegger's "Conan" character.
Baena, who bought a new four-bedroom house with a pool about two hours north of Los Angeles last year, filed for divorce from her husband in February 2008, court records show.
The longtime employee struck up a sexual relationship with Schwarzenegger in the late 1990s and didn't tell the actor he was the father until the boy was a toddler, TMZ reported.
"This is a painful and heartbreaking time," Maria Shriver said in a brief statement issued after Schwarzenegger admitted siring a child out of wedlock.
"As a mother, my concern is for the children," she said. "I ask for compassion, respect and privacy as my children and I try to rebuild our lives and heal."
Two of the couple's four children took to Twitter.
"This is definitely not easy but I appreciate your love and support as i begin to heal and move forward in life. I will always love my family," wrote eldest child Kristina Schwarzenegger, 21.
Her brother Patrick then quoted music lyrics saying "some days you feel like s--t, some days you want to quit and just be normal for a bit."
Schwarzenegger revealed the bombshell betrayal in a statement made first to the Los Angeles Times.
"After leaving the governor's office I told my wife about this event, which occurred over a decade ago," he said. "I understand and deserve the feelings of anger and disappointment among my friends and family. There are no excuses and I take full responsibility for the hurt I have caused. I have apologized to Maria, my children and my family. I am truly sorry."
According to the Times, the woman retired from the family's household staff in January on good terms with a severance package.
"I don't think Maria suspected it. This was obviously a trusted person in her life, someone who stuck around for a decade after this event," Kennedy expert Laurence Leamer, author of the Schwarzenegger biography "Fantastic," told the Daily News.
"What's appalling is that Arnold apparently did this in the house. It's really a double betrayal for Maria. It's just creepy," he said.
The former Mr. Universe, now trying to stage a Hollywood comeback, battled accusations of sexual misconduct during his initial run for the California governor's office, and his crude sexual advances have been an open secret in Hollywood for decades.
Shriver, 55, stood by Schwarzenegger and vouched for his integrity, all but sealing his election victory.
After admission of his infidelity, a 2003 story in the London Daily Mail that claimed Schwarzenegger fathered a son with his personal flight attendant Tammy Tousignant quickly resurfaced.
"It's not his child," a legal source close to the Tousignant family told the News.
The source confirmed "scientific tests" disproved Schwarzenegger's paternity years ago.
Shriver moved out of the family's Brentwood mansion weeks ago and reportedly met with a financial advisor to prepare for a possible divorce filing, TMZ reported.