here are some more
I don't know if the Ingalls' religion was ever specifically stated in either the Little House books or the TV series, but the real Laura Ingalls Wilder was a Congregationalist. In the TV series, the families are shown at services a number of times.
On a related note, Dabbs Greer, who played Rev. Alden in Little House, was always playing ministers. He married Mike and Carol in the pilot episode of The Brady Bunch.
It's been years since I've seen Father Dowling Mysteries. He was always working on cases and I don't remember if we ever saw him actually say Mass!
Rev. Timothy Johnson was a regular character on Dr. Quinn, Medicine Woman, but even though I've seen all the episodes a number of times, I don't know if his denomination was ever specified.
A short-lived TV show I enjoyed in the 1990s was called Nothing Sacred, about an inner-city parish that remarkably had two priests!
And your useless trivia for the day: Barbie is said to be Lutheran, probably because she is from Wisconsin. (I am not making this up!)