St. Jude Thaddeus was never canonized because he was named a martyr before the canonization process began. He was one of the 12 apostles of Jesus, and he died in the first century.
St. Jude is considered the forgotten saint because he is commonly confused with Judas Iscariot. This error means that many Christians do not offer him deserved respect and reverence. His feast day is on Oct. 28, and he is the patron saint of desperate causes. This is due to his letter in the New Testament, the Epistle of St. Jude, which implores the Christian faithful to persevere through hard and trying times.