Eileen Prince was a pure-blood witch who married Mr. Snape. She had a half-blood son called Severus Snape aka the half blood prince . She and Mr. Snape argued a lot and Severus could not wait to go to hogwarts and leave . It is unknown when she was born. It is unknown if she is still alive but there is a possibility she is dead. She was a member of the order of the Phoenix in the first wizarding war. She and Mr. Snape have divorceed .