I remember reading a series of books when I was very young, about a small guardian angel named Wopsy who was tasked to look after a small African boy named Shiny-John.
Years later I tracked down an online version and found it appalling.
It was written by a Catholic African missionary in the 50s and it's very dated and rather pompous to the point of racism.
If you are interested, you can read part of one of then
HERE.