This is too weird not to share! Console Wars author Blake Harris has been going through a Nintendo Character Guide from 1993. It's meant to instruct folks on the who, where, and what of Nintendo characters.
Amongst a bunch of other interesting tidbits Harris has been tweeting out, the book contains biographical information about Yoshi, and it's revealed the dino's real name is--wait for it--T. Yoshisaur Munchakoopas.
I'm not sure if I like Yoshi more or less because of this revelation.