Summary
Registrant Karen Rizzo is an adoptee looking for any of her birth family. The adoptee was born in California in 1968 on July 9th. She was born in Oakland in Alameda County to a 36 year old birthmother. Her adoptive name became Karen Ann Koster.Online Genealogy and Family Research Resources
RIZZO results at Ancestry.com - more than 1.5 billion recordsKaren Koster records at Ancestry.com
California Adoption Record: # 21661
Adoptee looking for Any Birth Family
Karen Rizzo
Adoptee's Info
Birth Name: Unknown
Adoptive Name: Karen Ann Koster
Date of Birth: Jul 9, 1968 (now 57 years old)
Gender: Female
Birth Location: Oakland city, Alameda county, California USA
Birthmother's Info
Name: Unknown
Born: Unknown
Age at Adoptee's Birth: 36
Religion: Unknown
Birthfather's Info
Name: Unknown
Born: Unknown
Age at Adoptee's Birth: Unknown
Religion: Unknown
Born at Hospital: Kaiser
Birth Certificate:
Adoption Agency:
Additional Info
Three half siblings bm was married at time of birth but was divorcing husband.Three half siblings lived with him he signed adoption papers bit eas not the biological father
Registered: February 5, 2013
Adoptee looking for Any Birth Family
Karen Rizzo
Adoptee's Info
Birth Name: Unknown
Adoptive Name: Karen Ann Koster
Date of Birth: Jul 9, 1968 (now 57 years old)
Gender: Female
Birth Location: Oakland city, Alameda county, California USA
Birthmother's Info
Name: Unknown
Born: Unknown
Age at Adoptee's Birth: 36
Religion: Unknown
Birthfather's Info
Name: Unknown
Born: Unknown
Age at Adoptee's Birth: Unknown
Religion: Unknown
Born at Hospital: Kaiser
Birth Certificate:
Adoption Agency:
Additional Info
Three half siblings bm was married at time of birth but was divorcing husband.Three half siblings lived with him he signed adoption papers bit eas not the biological father
Registered: February 5, 2013
Recent adoption records added to the online California biological family reunion registry
- Female adoptee born on Nov 3, 1981 in Bakersfield, California
Adoption record added Thursday at 10:08am - Female adoptee born on May 22, 1968 in Los Angeles, California
Adoption record added Sunday, Feb 15th at 5:48pm - Other Birth Family looking for Female adoptee born on Oct 23, 1969 in Pittsburg, California
Adoption record added Saturday, Jan 31st at 9:48pm - Female adoptee born on Nov 14, 1960 in Canoga Park, California
Adoption record added Wednesday, Jan 21st at 12:18pm - Male adoptee born on Dec 31, 1973 in El Centro, California
Adoption record added Saturday, Jan 17th at 4:17am - Biological Sister looking for Female adoptee born on 1963 in Napa, California
Adoption record added Wednesday, Jan 14th at 12:14pm - Female adoptee born on Oct 22, 1970 in Camarillo, California
Adoption record added Sunday, Dec 14, 2025 at 4:34pm