Saint Andrew lived in Constantinople, and from a young age loved God's Church and the Holy Scriptures. Wanting to dedicate his whole life for Christ, he took on the ascetic feat of becoming a 'fool for Christ', acting as if he were insane. For many years, the Saint endured mockings, insults, and beatings as he wondered the streets of the City in poverty. He humbly accepted this, and prayed for those who mocked him. A complete summary of his life can be read here: http://focusunsw.blogspot.com.au/p/the-life-of-saint-andrew-fool-for-christ.html
Below is an account written by the Saints friend, Nicephorus. His memory is celebrated on the 2nd of October.