Possible Clues:

• Mary does not take Ecstasy at Oxford
• On publication day, beer at New College
• Valley dividing half of attractive college
• Mary - Oxford college
• Mary ........, companion to Christ
• Mary . . . . . . . ., follower of Christ
• College named after sinner — that sounds sentimental
• Mother angled craftily for a place at Oxford
• Oxford University college
• College publication a learner kept in study