In Rick Riordan's The Heroes of Olympus series, it's on the Feast of Spes that the primodial deite Gaia wants to rise.
Bannerman, John, "The Scottish Takeover of Pictland" in Dauvit Broun & Thomas Owen Clancy (eds.) Spes Scotorum: Hope of Scots. Saint Columba, Iona and Scotland. T & T Clark, Edinburgh, 1999.
Marie-Dominique Chenu, famed professor of the Pontifical University of Saint Thomas Aquinas, Angelicum was influential in the composition of Gaudium et spes.