I'm not convinced that the typography on Francis' tomb was an error. For example, it's common in older buildings (~18/19 c) in Transylvania to find Roman numerals highlighted within words in texts on murals and facades of buildings. If you reassemble the numbers, or perhaps sum them, you'll get a certain year, perhaps the year it was built, or some date significant to the message. There is a name for it, and it's in Chambers Book of Days, but I can't bring it to mind. At any rate, the two widely spaced letters on the tomb inscription are A and V. Which, I'm guessing, might have something to do with Α and ω.
