ISO Birth Sibling born 03/1971 Tx

I am searching for a birth sibling born around 03/03/1971 It is possible that the date is a little off, but I am told that it was definetely in March. Born at the Edna Gladney Center for Unwed Mothers. Birthmother was 15 at the time of birth, unknown if any birthfather information was listed as my grandfather is the one that filled out all the paperwork. Birthmother was at the home under an "alias" name, so I am unsure if the baby was given the "alias" last name or her maiden name...which is Smith. Birthmother was born in Memphis, Tennessee. She also lived in Pensacola, Florida and then on to Texas, which is where the baby was born. Birthmother's, Mother passed away in 1966. So at the time of birth, it was only my mother and her father. The baby had a head full of dark hair, and blue eyes. Birthmother was told the baby was a little girl, but during the time that she was holding the baby, she was crying alot, so she is having a hard time remember the gender of the baby. I would really like to find you, get to know you. I'm not trying to interrupt or intrude in your life, I just NEED to know you. Please contact me.