Is there any mention in the Bible of any faithful worshipper of God praying to a saint ?
No, that would be placing someone else ahead of God and that is a violation of the first commandment. There are no people in the new Jerusalem yet.John 3:13
Nope. And if there was they'd be killed by God or man or rebuked followed by his family being cast out of the camp/town/country.
There could be, u would have to read my friend too see. The answers in the book of god. But i believe so. God gave everyman there own free will..
Absolutely not. Any follower of the Almighty gave praise only to the father and worship
Key word, "faithful" worshipper, so, no.
Nope. Thats a Catholic thing made up by some pope at some point in history. God is very clear that we are not to pray to anyone but Him/Christ.
The only one we should pray to is God and the only mediator is Christ.