Athanasius of Alexandria (Greek: ÁèáíÜóéïò) (also spelled "Athanasios") (c.293 May 2, 373) was a Christian bishop, the Bishop of Alexandria, in the fourth century. He is revered as a saint by the Roman Catholic Church, the Eastern Orthodox Church, and the Oriental Orthodox Church, and regarded as a great leader of the Church by Protestants. Roman Catholics have declared him, earliest living, one of 33 Doctors of the Church, and he is counted as one of the four Great Doctors of the Eastern Church.
http://en.wikipedia.org/wiki/Athanasius_of_Alexandria
Those fathers who wrote in Latin are called the Latin (Church) Fathers, and those who wrote in Greek the Greek (Church) Fathers. Famous Latin Fathers include the Montanist Tertullian, St. Augustine of Hippo, St. Ambrose of Milan, and St. Jerome; famous Greek Fathers include St. Irenaeus of Lyons (whose work has survived only in Latin translation), Clement of Alexandria, the heterodox Origen, St. Athanasius of Alexandria, St. John Chrysostom, and the Three Cappadocian Fathers. http://en.wikipedia.org/wiki/Church_Fathers
And where does it say that he is celebrated solely because of his stance on the Trinity?
and he is counted as one of the four Great Doctors of the Eastern Church
So is Saint Augustine and the Orthodox teach absolutely nothing from him. So is Saint Gregory of Nyssa, who believed in universal salvation and was Origen's disciple.
Athanasius was one of the people responsible for finializing the Christian canon. The Church chooses to look the other way about his methods and behaviors. It is only concerned with the correctness of his theology, especially vis avis Arianism.
And, most importantly, the Church did NOT accept his sola-Hebrew OT formula.
And where does it say that he is celebrated solely because of his stance on the Trinity?
His opposition to Arianism, a major heresy that plagued the early Church and tore deep into the heart of Christology, was and is the central event for which he is best known.