LOS ANGELES (LALATE) – Mildred Patricia Baena kept her affair as Arnold Schwarzenegger’s mistress a secret from her family, her husband and even her son, claims a new report. Mildred Patricia Baena (photos below) was known to friends as Patty Baena or Mildred Baena. But now a new report this weekend claims that friends and family may not have known that her son’s biological father was Arnold Schwarzenegger over the entire last thirteen years.

Arnold Schwarzenegger has yet to comment about the details extensively. Nor has Mildred Patricia Baena. But now a new report claims that Mildred Patricia Baena passed off two different men as her love child’s father since he was birth over a decade ago.

An initial birth certificate obtained by Los Angeles news in 2010 first tipped off reporters that something was erroneous. On the birth certificate for Mildred Patricia Baena’s son, she listed the child’s father as her then biological husband. But in her divorce papers years later, she indicated to a California Divorce Court that the man had no children with her during her marriage.

That ex husband has to speak out. On the birth certificate, Baena, then married, listed her name as Mildred Patricia Peña, not Mildred Patricia Baena. For the child’s father, she listed on the birth certificate her then husband Rogelio de Jesus Baena.

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A report this weekend in the New York Post claims the child believed Baena’s boyfriend Alex Aguiar was his father, not Arnold Schwarzenegger.

But how about Mildred Patricia Baena’s family? Local Los Angeles news caught up with Mildred’s sister Miriam Pena this week. When asked what was Mildred’s current condition, Miriam said her sister was doing well. When asked about Maria Shriver, Miriam said her family has a lot of respect for the Shriver and Schwarzenegger family.

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But the Post claims that both Miriam and mother Evelyn Pena at one time worked for the Shriver and Schwarzenegger family as well. Did the sister and mother know Mildred’s baby daddy was their employer? The New York Post claims Mildred Patricia Baena’s family, like her husband, was at sometime mislead about the identity of the child’s biological father.

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Additionally, new reports claim that the affair between Mildred Patricia Baena and Arnold went on for sometime. As previously detailed on LALATE, Arnold’s affair with Mildred Patricia Baena started at least thirteen years ago, that her employment was begun reportedly five years before his marriage to Maria Shriver twenty-five years ago. But in recent days, another alleged mistress has resurfaced who claims her affair with Arnold lasted throughout his marriage to Shriver and that she believes there were many other mistresses during the actor’s marriage.