I wanted to add a few things which hopefully will be helpful.
The following is taken directly from a certificate:
"This is to cerity that the inmate of the Athens Municipal Infants' Home, illegitimate, unbaptised, male child of Pesmatsandra Malani has been given for adoption to the couple Robert and Mary Thomas on 14 Feb. 80.
The adoption case will be heard on 25 Nov 80 before the Athens Court of First Instance.
The present is granted to Robert and Mary Thomas upon their request serial No. 2437/80.
The Director, A. Papadimitropoulos" end of quote
The above is the only document I have with my biological mother's name on it. When I was adopted I was given the name of Matthew Thomas. When I was naturalized and became a citizen of the United States I adopted the name Malani as my last name.
I hope this clears up some of the confusion I caused. Thank you again for your help.