I think Eleanor Farjeon was UU; she wrote "Morning is Breaking" and was a children's writer, still one of my favorites.

When I was in Florida, One of the guys who was a UU went by the stage name of "Boomslang." (A highly poisonouis snake.)

there is great stuff in the "UU" hymnal.

May I say that the theme song of my church is "It ain't necessarily so?" True story.