all of my info is on the message you responded to. However, I have since found out that Leah Markle-Airgood did remarry, the name escapes me at the moment. So i would assume that either Abraham died or there was a divorce, maybe because of abandonment.
I did find Abram on the 1830 census:
Pennsylvania Census, 1772-1890
1830 AREGOOD ABRAHAM Berks County PA 502 Robeson Township Federal Population Schedule PA 1830 Federal Census Index PA55845246
so maybe he wasn`t born the same time your Ergood was born, I have found Abram under several different spellings of the name. I have come across several people who may be able to help you though. If you don`t mind I will forward your message and see if they can help you.