St. Andrew is the older brother to St. Peter. According to the New Testament, Andrew was born in the village of Bethsaida on the Sea of Galilee during the early first century. Much like his younger brother, Simon Peter, Andrew was also a fisherman. In the Gospel of Matthew, it is said Jesus was walking along the shore of the Sea of Galilee and saw Andrew and Simon Peter fishing. It is then he asked the two to become disciples and "fishers of men.”
In, the Gospel of John tells a separate story, stating Andrew was a disciple of John the Baptist. When Jesus walked by one day, John the Baptist stated, "Behold, the Lamb of God!" It is then that Andrew and another made the decision to follow Jesus.
Little else is said about Andrew in the Gospels, but it is believed Andrew was one of the closer disciples to Jesus. It was he who told Jesus about the boy with the loaves and fishes, according to John 6:8. When Philip wanted to speak to Jesus about Greeks seeking him, he spoke to Andrew first. Andrew was also present at the last supper.
Andrew was martyred by crucifixion in Patras. He was bound, rather than nailed, to a cross, as is described in the Acts of Andrew. He was crucified on a cross form known as "crux decussata," which is an X-shaped cross or a "saltire." Today this is commonly referred to as "St. Andrew's Cross." His saltire cross is featured on the flag of Scotland and is represented in much of his iconography. (catholic.org)
Almighty God, who gave such grace to your apostle Andrew that he readily obeyed the call of your Son Jesus Christ, and brought his brother with him: Give us, who are called by your holy Word, grace to follow him without delay, and to bring those near to us into his gracious presence; who lives and reigns with you and the Holy Spirit, one God, now and
for ever. Amen. (Book of Common Prayer)