By Jimmy Akin, EWTN News - St. Andrew was one of Jesus’ closest disciples, but many people know little about him.. The feast of St. Andrew is November 30th... St. Andrew was the brother of St. Peter, who was also known as Simon bar-Jonah. He and Andrew shared the same father, so the latter would have been known as Andrew bar-Jonah. Andrew is regularly mentioned after Simon Peter, which suggests that he was Peter’s younger brother.