We don't know much about Damaris. She is named in one verse - Acts 17:34. It is the only place Damaris is mentioned. She lived in Athens and is remembered because she heard the Apostle Paul's testimony and became a believer in Christ.
When we think about the crucifixion, we focus on Jesus - as we should. However, He was not the only one at the place called the Skull. Two criminals were led out with Jesus to be executed along with Him.