For the cannonization process, off the top on f my head, I know there are several qualifications, one of which I believe must be something miraculous to have occurred during that persons life.
...Once all conditions are met, that person is eligabke for canonization.
I could look up the exact conditions if you'd like.
Let's look at another Catholic Saint; Saint Clement of Alexandria.
In Alexandria, by the second century, ‘Docetism,’ the concept that Jesus had existed as a spirit rather than a human being, had all but theoretically been stamped out. But still, there persisted the belief that their Jesus, although seen as a sort of human being, did not have our normal bodily needs, such as eating, drinking and excretion, and Clement the bishop of Alexandria, wrote: “
It would be ridiculous to imagine that the redeemer, in order to exist, had the usual needs of man. He only took food and ate it in order that we should not teach about him in a Docetic fashion.” Satan must have had some trouble trying to tempt this false Jesus of theirs who had no need of food into turning stones into bread.
Their Jesus was not the Jesus as taught by the apostles, but that other Jesus, taught by the Anti-Christ, who unlike we mere HUMAN BEINGS, did not need to eat, drink, or go to the toilet, as was taught by one of the great teachers that the authorities of Emperor Constantine’s universal church, used as one of their authorities when trying to defend their false doctrines.
Saint Clement of Alexandria, who was a saint in the Martyrology of the Roman universal church, in support of the great lie, speaks of the time that some imaginary midwife, who was supposed to be at the birth of Jesus, (Non-biblical) told some woman by the name Salome, that the mother was still a virgin after the birth and that her hymen was still intact, and that this supposed Salome, stuck her finger into the mother’s vagina to check, and her hand immediately withered up, but the baby Jesus reached out and touched her hand and healed it.
Clement was accepted as a saint in the universal church, which was established by King Constantine, from a rag-tag group of insult hurling religious bodies, who called themselves christians. Eventually, sick to the stomach with their constant quarreling and abuse toward each other, Constantine summoned all the leaders of those groups to the first ever "World Council of churches," where, in 325 AD, some 300 years after the Apostolic Church of Jesus Christ had been firmly established in Jerusalem, the non-christian, and almost certainly theologically illiterate Constantine, established his universal church, which has nothing to do with the Jesus as taught by the apostles.
Down to the 17th century Clement was venerated as a saint. His name was to be found in the Martyrologies, and his feast fell on December 4. But when the Roman Martyrology was revised by Clement VIII (Pope from 1592 to 1605), his name was dropped from the calendar on the advice of his confessor, Cardinal Baronius. Pope Benedict XIV in 1748 maintained his predecessor's decision on the grounds that Clements life was little-known; that he had never obtained public cultus in the Church; and that some of his doctrines were, if not erroneous, at least highly suspect.
"ERRONEOUS--HIGHLY SUSPECT," they certainly got that right, but by then the false teaching of the so-called virgin birth had become firmly established in the minds of those people, whose brains are so mixed up and set as hard as concrete, today, one would need a sledge hammer to crack that concrete to allow the light of truth to enter in.
“Jesus The Evidence,” by Ian Wilson. P. 144. The Middle Ages, for the Jews at least, began with the advent to power of Constantine the Great. He was the first Roman Emperor to issue laws which radically limited the rights of the Jews as citizens’ of the Roman Empire, a right conferred on them by Caracalla in 212. As Constantine’s church grew in power it influenced the emperors to limit further the civil and political rights of the Jews.
But if times were again difficult for the Jews, for the Christian Gnostics and other fringe groups they were impossible. The books of Arius and his sympathizers were ordered to be burnt, and a reign of terror proclaimed for all those who did not conform with the new official Christian line.
:Understand now by this present statute, Novatians, Valentinians, Marcionites, Paulinians, you who are called Cataphrygians. . . . with what a tissue of lies and vanities, with what destructive and venomous errors, your doctrines are inextricably woven! We give you warning . . . .Let none of you presume, from this time forward, to meet in congregations. To prevent this, we command that you be deprived of all the houses in which you have been accustomed to meet . . . . and that these house should be handed over immediately to the catholic/ i.e. universal church.
Within a generation, hardly leaving a trace of their existence for posterity, the great majority of these groups simply died away as successive Christian emperors reiterated the policies that Constantine had pursued.
The many denominational daughters of the Roman Church of Constantine today, were spawned from the Pagan spirit/teachings of that church.