I'm looking for the name of a movie made in the early 70's maybe late 60's about Marco Polo's ancestor who sets out exploring and faces a bad sultan who he has to rescue to save a princess. It was called something like The adventures of Marco Polo the 8th. They also printed a book off the movie. Any ideas?

In the body of your question, you say it is a movie. If it is an animated movie,
It may possibly be this one:

Marco Polo: Return to Xanadu

In this animated adventure, a young man named Marco, ancestor of the great explorer Marco Polo, must outwit the evil sorcerer Foo-Ling in order to reach the magical land of Xanadu and save the beautiful princess Ming Yu from the sinister magician's clutches. It will be hard, but with a little help from his friends Reginald the Seagull and the Delicate Dinosaur, he... More will surely be able to save the day and live up to his family name. ~ Cammila Albertson, All Movie Guide

Marco Polo: Return to Xanadu specs