Sometimes we don't realize we need a thing until we seriously do need it.  If a digit of St. Rinbo happens to be that thing you need today, here it is.  From Wizardry IV: The Return of Werdna Handbook.

A raven tells the saint not to do it.  From La Colotte, 1909.

Saint Anthony of Padua preaches to the fishes.  From La Colotte, 1908.

From La Colotte, 1908.

"Saints, apostles, teachers, Shiva, Indra and all the gods—when the morrow comes, not one of them will remain: only the Invisible, the Imcomprehensible, will endure." —A Sixteenth Century Mystic by W. G. Orr (1947)

The patron saint of engineers.  From the University of Arkansas, Fayetteville's 1939 yearbook.

The patron saint of bureaucracy.  This image apparently inspired this later incarnation that includes a precursor to Post-It notes.

From Nebelspalter, 1905.

Free of red tape: some quite interesting vintage depictions of bureaucracy.

A smoke ring halo.  From La Colotte, 1906.

You knew there had to be a saint of pickles.  From Nebelspalter, 1897.

"I distrust apostles with no vowels in their names ever since that one, two years ago, made off with the spoons."  From Cecilia de Noël by Lanoe Falconer, 1891.  Speaking of no vowels, see Webster's Dictionary of Improbable Words: All-Consonant and All-Vowel Words.

Norbert Wiener wrote, "If I were to choose a patron saint for cybernetics out of the history of science, I should have to choose Leibniz" (Cybernetics, 1965).

Vampira is the patron saint for the children of the night (Vampira: Dark Goddess of Horror by W. Scott Poole, 2014).

Meanwhile, Dracula himself is the "patron saint for every desperate filmmaker on a budget" (Jim Steinmeyer, Who Was Dracula? 2013).