Excuse me for adding one thing, if it has not already been mentioned:

In the calendar of saints of the Eastern Orthodox and Catholic churches,
there is a saint called Ioasaf/Ioasaph in Eastern Orthodoxy and Josaphat
in Catholicism. This saint is actually the Buddha whose story has been
adapted to Christian teaching. He is called "Ioasaf, Prince of India" who
renounced his throne for the religious life. This story was found in
writings attributed to John of Damascus (early 8th century), who probably
got it from even earlier sources, and was incorporated into the lives of
the saints written by Simon Metaphrastes (c. 950). And so in a roundabout
way, the Buddha became a saint commemorated on a day each year in the
Orthodox and Catholic churches, and there are also icons painted of this
"saint" who is really the Buddha in thin Christian disguise.