No, Saint Patrick was never formally canonized
St. Brigid was never beatified or canonized. She became a saint in the first millennium, before the canonization process was standardized by the Vatican. She became a saint by popular acclaim rather than ever being formally canonized.
Saint Patrick was neither beatified nor canonized. He was declared a saint long before the canonization process was in place.
For about the first millennium of Christianity canonization was done regionally, so St. Patrick would have been canonized by his local Bishop. Formal canonization like we see today did not begin until 993 with Saint Ulrich who was canonized by Pope John XV.
St. Francis Xavier was canonized with fellow missionary St. Ignatius in 1622.
St. Eligius was canonized in the Pre-Congregation era. This was when people were often canonized because of their popularity while they were alive.
St. Etheldreda was canonized by Pope Celestine III in 1198.
There is no mention of Patrick ever drinking beer in any of his biographies.
St. Anselm was canonized in 1494.
The five canonized saints are St. Francis of Assisi, St. Therese of Lisieux, St. Teresa of Avila, St. John Paul II, and St. Mother Teresa.
Patrick was a slave from age 16 until age 22.
Yes, St. Odilia was canonized. She is known as a patron saint of the blind and visual difficulties.