In one episode, Sister Monica Joan casually mentions celebrating her “twenty-third birthday” during the reign of Queen Victoria. Wait, what? That would put her birth somewhere in the 1870s or 1880s. For context, that’s when people were still getting excited about the telephone and the light bulb. Yeah, she’s that old.
Another clue: she recalls being a novice in 1914, right as World War I kicked off. If she was around twenty years old then, she’d have been born around 1894. That makes her roughly 115 to 120 years old by the time the show’s later seasons roll around. I mean, wow. That’s older than your grandma’s antique teapot. And probably a lot more sass.
But Wait—She’s Not Actually a Vampire
Here’s the thing: the showrunners wisely keep her age deliciously ambiguous. They know that pinning down an exact number would ruin the magic. Sister Monica Joan exists in a sort of timeless ether, floating between centuries like a wise, slightly batty ghost. One minute she’s quoting Chaucer, the next she’s trying to eat a jar of pickled onions for breakfast.
When asked directly, she once quipped, “I am as old as my tongue and a little older than my teeth.” Which, honestly, is the most perfect answer. Why ruin a good mystery with arithmetic?
