He became a saint upon his martyrdom in/about the year 319. He was not canonized as the official process was not instituted until the 12th century. He was proclaimed a saint by the early Christian community based on his life and martyrdom.
There seems to be no Saint Cadog, however there is Saint Cadoc of Llancarvan. Is this who you were referring to?
St. Basil the Great is a pre-congregational saint. He was declared a saint by popular acclaim before there was an official procedure in place for canonization.
St. Agnes died as a martyr - considered automatic sainthood by the early Christian community.
St. Vitus was martyred for his faith and early Christians considered all martyrs to be saints.
To learn why St. Anthony of Padua deserves the title of saint, click on the link below.
The patron saint of sports (athletics) is St. Sebastian, not St. Chloe.
There is no saint named Columbus.
There is no saint named Paricia.
St. Petersburg is the name of a city and not a saint.
he was
There is a St. John the Baptist but no St. John Paul the Baptist.
Andrew is a saint but not a patron saint.
1921
There seems to be no Saint Cadog, however there is Saint Cadoc of Llancarvan. Is this who you were referring to?
Pius XI is not yet a canonized saint.
St. Patrick did not aspire to become a saint. He simply tried to do the will of God in the best way possible and that led to him being declared a saint.
There were a couple St. Oswalds, you need to be more specific.