To the best of my knowledge, St. Hilarion doesn't have any patronages assigned to him, here is his story (from Saints.SQPN website):
(Saint) Abbot (October 21) (4th century) One of the best known Palestinian Solitaries. Born near Gaza of Pagan parents, about A.D. 292, while quite young, he sought and received Baptism, and afterwards repaired to visit Saint Antony in Egypt. On his return to Palestine, finding his parents dead, he distributed his whole fortune to the poor and retired into the wilderness on the borders of Egypt, being even then only fifteen years old. From that time till his death at the age of eighty, he practised most severe abstinence, eating only each day a few herbs and a small piece of bread. Overcoming the Evil One in many a hard fight, he was graced in an eminent degree with the gift of miracles, more especially for the deliverance of those obsessed by the devil. Disciples soon flocked around him, and he then founded many monasteries in various parts of Palestine. In A.D. 357 he visited the tomb of Saint Antony, who had just passed away, and afterwards, to escape from the crowds who continually thronged about him seeking the cure of their maladies, he kept travelling from country to country. He visited Egypt, Sicily, Dalmatia, and finally Cyprus, where he died A.D. 371. Saint Hilarion is commemorated annually in the Liturgies of both the Eastern and the Western Churches.
Saint-Hilarion's population is 897.
The area of Saint-Hilarion is 14 square kilometers.
The Patron Saint Inex lists no patron saints of bears.
A patron saint is supposed to be a protector in the Catholic religion. Patron Saint Angelico is the patron saint of artists. A patron saint is a protector of life.
The Patron Saint Index lists no patron saint of dinosaurs.
As per the Patron Saint Index, there is no patron saint of wrestlers. However, Saint Sebastian is the patron saint of all athletics and athletes.
Saint Lillian is not a patron saint as per the Patron Saint Index.
No, there is no patron saint of billiards.
There is a patron saint of Wales but no patron saint of whales.
There is no patron saint of color.
There is no patron saint of voting.
There is no patron saint of red heads as per the Patron Saint Index.