Pope St. John I died in prison on May 18, 526, of thirst and starvation in Ravenna, Italy, where he had been taken by soldiers of the emperor of Italy, Theodoric the Goth. He was declared a saint by the early Catholic community long before the canonization process was put in place, probably soon after his death.
There is a St. John the Baptist but no St. John Paul the Baptist.
There are a number of Saints named John so you need to be more specific.
There is no 'Saint Johnny.' However, there are many saints named John or Juan. Which one are you referring to?
St. John Fisher was canonized in 1935 by Pope Pius XI.
John was canonized on October 16, 1690, by Pope Alexander VIII.
he was
John became a saint the moment he died and entered heaven. However, he was officially recognized as a saint (canonized) on December 27, 1726, by Pope Benedict XIII.
he become a saint by helping a poor Indian bleeding to death
He was canonized by Pope Clement XII on April 5, 1737.
She was canonized on October 31, 1982, by Pope John Paul II.
John the Baptist is not the patron saint of teachers.
Saint John Bosco became a saint through the process of canonization by the Catholic Church. This involved an official investigation into his life, writings, and reputation for holiness. After verifying miracles attributed to his intercession and determining his virtuous life, he was declared a saint by the Pope.