Although he was bred __ the law, he became a successful journalist.
Problem: Fill in the blank with apt. preposition.
Attempt: I have no idea. Even my 1500 page Oxford dictionary doesn't have a usage of the verb "breed" which might suit the sentence here :/ My best guess can be "with" or "under" but I don't know if it's correct.
Question: What is the correct answer here and why?