The Orthodox patron saint for the homeless is saint Xenia.
Saint Tikhon's Orthodox University was created in 1991.
There is no Orthodox patron saint for dogs.
Catholic AnswerSaint Abigail was considered a saint, or rather a prophetess even by Talmudic scholars (Jewish Bible scholars) (she was a wife of King David in the Old Testament), and has always been considered a saint by the Church. She was never canonized as she was considered a saint long before there was a Congregation for Saints causes.
I can find no saint named Abbie. There is Abigail the Matriarch from the Old Testament but she does not hold the title of saint and is not a patron saint.
St. Abigail is the patron saint of bees and beekeepers. She is also called Gobnait and Deborah.
Gregory is recognized as a saint in the Orthodox religion but not in the Catholic.
Saint Michael the Archangel, Saint Gabriel the Archangel, Saint Ruphael, Saint Urael, Saint Raguel, Saint Fanuel, and Saint Saquel
Saint Nicholas Greek Orthodox Cathedral was created in 1904.
Saint Tikhon's Orthodox Theological Seminary was created in 1938.
Saint Vladimir's Orthodox Theological Seminary was created in 1938.
Saint Herman's Orthodox Theological Seminary was created in 1972.