Andrew the Apostle, also called Saint Andrew, was an apostle of Jesus. According to the New Testament, he was a fisherman and one of the Twelve Apostles chosen by Jesus. The title First-Called stems from the Gospel of John, where Andrew, initially a disciple of John the Baptist, follows Jesus and, recognizing him as the Messiah, introduces his brother Simon Peter to him.

A saltire, also called Saint Andrew's Cross or the crux decussata, is a heraldic symbol in the form of a diagonal cross. The word comes from the Middle French sautoir, Medieval Latin saltatoria ("stirrup").