i don't know about the first one, but the life of saint anthony by saint athanasius is one amazing book and a testimony to God's work in the lives of these 2 Godly men who gave themselves to God's service, suffering great hardships.
saint anthony is one of the great fathers of monasticism and saint athanasius was a deacon at the council of nicea in 325AD (i think it is the right date). he was ordained a priest and diligently rebuked arius for his heresy and proved to all present how wrong that was.
later he became patriarch of the coptic church (then just the 'orthodox church of alexandria') and suffered a lot from the hands of the roman empire.
all through his suffering and running for his life, he never ceased to write tirelessly to encourage his church to remain true to the faith. he eventually died in exile, although later the church enjoyed more peaceful times. he was very humble and never left the principles of monasticism, prayer and fasting that he learnt at the feet of saint anthony; his spiritual father when he was a young monk in the desert. the relationship between them continued throughout saint anthony's life, as the aged father came down out of the desert on several occasions to assist and encourage the patriarch.
(source: iris habib al masry's book on coptic history which i am reading at the moment)