This is a brief summary suitable for children, but it contains several errors: chiefly that Sylvester was never a pope, he was a usurper, and he did not die in exile, but in a monastery prison, for the sin of pretending to be pope when he was not, having been elected in an uncanonical manner.
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The Book on the Trinity, every faithful Catholic priest would love as his next present
This is Br. Bugnolo's English Translation, of Saint Bonaventure's encylopedic book of theology on the Trinity: With this book, your priest will always have something intelligent and awesomely inspiring to preach to you about
God the Father, God the Son & God the Holy Spirit!
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Thank you for clarifying that antipope Sylvester because online sources mostly posted Pope Sylvester 1.
Yes, I think the producer of this short video was likewise confused, and did not know that the Sylvester deposed at Sutri was never a true pope, but a usurper who was elected by the Roman Clergy and People, after they drove the true Pope, Benedict IX, out of the city, on account of his egregious crimes of fornication, sodomy and adultery.