Jan has a daughter, Candace Freeland, who is a photojournalist and musician. Dooley appears on the scene untamed and uninvited. Try reading a brief part of a Dooley speech in the dialect of your own region. They are very different characters, but both make a powerful contribution to the books. Priests seldom have people they can confide in.
Minor characters are an important part of the Mitford books.
Many people don't like to talk about their faith. Discuss whether it might also be a close neighborhood in a large city. Faith in God is clearly a significant part of Father Tim's makeup. Choose a character that exemplifies one of these virtues. Father Tim's home is transformed from staid bachelor quarters into a topsy-turvy household.