Summary
Registrant Leslie Cosgrove is a birth sibling looking for biological birth sibling. The adoptee was born in Florida in 1955 on December 27th. She was born in Miami in Miami-Dade County to 21 year old birthmother Marianne Ruth Magner (maiden name Cooper). Lawyer, Herman Isis and/or Dan Sati handled the adoption.Online Genealogy and Family Research Resources
COSGROVE results at Ancestry.com - more than 1.5 billion recordsMarianne Magner records at Ancestry.com
Marianne Cooper records at Ancestry.com
Daniel Magner records at Ancestry.com
Florida Adoption Record: # 20966
Birth Sibling looking for Birth Sibling
Leslie Cosgrove
Adoptee's Info
Birth Name: Unknown
Adoptive Name:
Date of Birth: Dec 27, 1955 at unknown (now 70 years old)
Gender: Female
Birth Location: Miami city, Miami-Dade county, Florida USA
Birthmother's Info
Name: Marianne Ruth Magner (Cooper)
Born: Apr 26, 1934 (now 91 years old)
Age at Adoptee's Birth: 21
Religion: Unknown
Birthfather's Info
Name: Daniel Joseph Magner
Born: Apr 3, 1929
Age at Adoptee's Birth: 26
Religion: Unknown
Born at Hospital: Doctor's Hospital?
Birth Certificate:
Adoption Agency: Lawyer, Herman Isis and/or Dan Sati
Additional Info
Adoptive family paid for all living and medical expenses for the birth mother. She changed her mind but was forced to sign papers while medicated
Registered: November 7, 2012
Birth Sibling looking for Birth Sibling
Leslie Cosgrove
Adoptee's Info
Birth Name: Unknown
Adoptive Name:
Date of Birth: Dec 27, 1955 at unknown (now 70 years old)
Gender: Female
Birth Location: Miami city, Miami-Dade county, Florida USA
Birthmother's Info
Name: Marianne Ruth Magner (Cooper)
Born: Apr 26, 1934 (now 91 years old)
Age at Adoptee's Birth: 21
Religion: Unknown
Birthfather's Info
Name: Daniel Joseph Magner
Born: Apr 3, 1929
Age at Adoptee's Birth: 26
Religion: Unknown
Born at Hospital: Doctor's Hospital?
Birth Certificate:
Adoption Agency: Lawyer, Herman Isis and/or Dan Sati
Additional Info
Adoptive family paid for all living and medical expenses for the birth mother. She changed her mind but was forced to sign papers while medicated
Registered: November 7, 2012
Recent adoption records added to the online Florida biological family reunion registry
- Researcher looking for Female adoptee born on Unknown in Orlando, Florida
Adoption record added Today at 10:02am - Birth Mother looking for Female adoptee born on Dec 16, 2007 in Margate, Florida
Adoption record added Friday, Dec 26, 2025 at 6:53pm - Birth Mother looking for Female adoptee born on Dec 29, 1994 in Volusia County in Florida
Adoption record added Monday, Nov 24, 2025 at 2:33pm - Biological Sister looking for Birth Sibling of Female adoptee born on 1960 in Miami, Florida
Adoption record added Monday, Oct 20, 2025 at 12:53pm - Birth Mother looking for Female adoptee born on Dec 8 in Bradenton, Florida
Adoption record added Tuesday, Jul 15, 2025 at 12:25pm - Birth Mother looking for Male adoptee born on Dec 2 in Bradenton, Florida
Adoption record added Tuesday, Jul 15, 2025 at 12:21pm - Other Birth Family looking for Birth Mother of Female adoptee born on Mar 2, 1992 in Gainesville, Florida
Adoption record added Saturday, Mar 29, 2025 at 7:21pm