The postillion was struck by lightning

I'm going out to do chores in an hour, but I want to break 14,000 words before I do. (It's not a habit; it's cool.)

My quandary of the morning:

Is "St. George's blessed ballsack" too graphic a curse for romantic fiction?

Because the likelihood of me using this are really high. I can only say "odso!" so many times, folks. And "corpus christe" screams "city in Texas" anymore.

I need more antiquated swears.