The last years of Hosius were difficult. Constantine’s Christian adviser and the shepherd of Nicea had long left the court and gone back to his own flock at Cordoba. But politics followed him. Constantine’s son, Constantius, favored a rival Christianity and threatened the ninety year old. For all Hosius’ great works for the Church, his letter to the young emperor are the only words of his we still have.
I was a confessor of the faith long before your grandfather Maximian persecuted the church. If you persecute me, I am ready to suffer all rather than to shed innocent blood and to betray the truth.
And he gets little credit for the Church’s triumph. That goes to prolific writers like Athanasius or later men on surer ground like Ambroise.