Where's my father???

Ok I'm just going to dive in. I'm 26, 3-9-89. I stay in Augusta, Georgia. My mom is named Marshall Denise Hankerson. I'm looking for my dad. My father. Seed Donor whatever. I have a 1 year old son and man life is ruff. All I know about him is that he was in the army and my mom was about 19-20 & he was around 39-49. His name is Ed which could be short for Edward. My mom's best friend is named Sarena I think her last name was McCloud. But it's Gaines now. I'm really trying to find him. His last name is Williams or Williamson. Somebody please help me. I just want him to know I exist. I'm married, have one son. Man life is not to good for me but I think if I could meet my dad and talk with him. I'd respect him like no other man. Just show up is all I ever wanted. I've been in like 3 foster homes. I was told my mom came to his residence at that time and told him about her being pregnant and three days later he moved. My mom may have a small mental disability but God allowed me to be born to cover her. Now I'm in a weak point in my life. Headed for divorce, one car which happens to be my wife's. No job, no money. Just a car I can fix and my son. Living like this in this situation is very unhealthy for me. Can anybody with any information that can lead me in that Direction help me?????????? Please!!!!!!$