How do I find a daughter when I do not have her name or her mothers last name?

Question:

How do I find a daughter when I do not have her name or her mothers last name?

Additional Details

4 months ago
I was with a girl when I was 18. After a disagreement I had told her to stop calling me. I saw her about a year later and she had a baby and was going with a person I grew up with. We weren't great friends but I know his nickname and not his full name. This was 21 years ago and I have a general idea of where the mother was living at the time I saw her, but I do not know the exact street address.

Best Answer - Chosen by Asker: 4 months ago
I was with a girl when I was 18. After a disagreement I had told her to stop calling me. I saw her about a year later and she had a baby and was going with a person I grew up with. We weren't great friends but I know his nickname and not his full name. This was 21 years ago and I have a general idea of where the mother was living at the time I saw her, but I do not know the exact street address.