So what it means by "two farther" is that he is between two adults that are treating him like his son, his teacher having strict teachings and have his father do the homework instead, the author made multiple meanings because he wants his readers interpretation guide the story instead of his words, the priest I'm guessing on but helps him with his problem with the teacher and his farther since he's getting abused in the story.
The correct answer is The oldest son in a family inherits the family wealth when his father dies
The primogeniture is the right of the first born male. The oldest son will inherit everything regardless of the wife being alive or if there are older daughters.
