Fr. Wilson was a priest at the school where Mark Warriner was studying to join the priesthood. He initially met Mark and Sarah Owens while they were doing volunteer work, but after Mark fell in love with Sarah, he decided to leave the priesthood.
Fr. Wilson stopped by to talk with Sarah to try and convince her that she was doing wrong by Mark by taking away a lifetime commitment when she herself couldn't give him one. Sarah began to feel guilty and broke up with Mark so that he'd go back into the school.