What are Malcolm X grandparents name?

Malcolm's X dad was killed by the KKK all because he was a strong, and powerful man that didn't want to back down to the KKK members. He's Quote that the said was " Im a man!" "Im a man!" So, they beat him to death then put him on the train tracks. Then waited for the train to come, and the train crushed him to death. =(

Im not sure what happened to his mother.