No, Saint Patrick was never formally canonized
Saint Patrick was neither beatified nor canonized. He was declared a saint long before the canonization process was in place.
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.
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.
St. Anselm was canonized in 1494.
There are thousands of canonized saints, not just five.
Yes, St. Odilia was canonized. She is known as a patron saint of the blind and visual difficulties.
There was no formal process for canonization in place when Patrick died. He was proclaimed a saint by popular acclaim, probably with the approval of a bishop. The official process for canonization did not come until about the 12th century.
St. Clare of Assisi was canonized on September 26, 1255, by Pope Alexander IV.
Catherine was canonized in July of 1461 by Pope Pius II.