St. Eusebius was born in Sardinia in the fourth century, when Arianism was endeavoring to undermine the doctrine of Christ’s Divinity. As bishop of Vercelli in Italy, he supported St. Hilary, Pope Liberius and St. Damasus, whose feast is December 11, in their struggle against the heresy. He suffered every sort of vexation and was exiled, but finally returned to his episcopal city, where he died in 371. The Church honors him as a martyr on account of his sufferings for his faith in Christ’s Divinity.