openmw.org

CSVWorld::IdValidator::isValid() has this check: Which means one can't create (or clone) something like "6th bell hammer" using the creator on the table bottom box.

Can the digit check be moved (i.e. made to return true always) or will that break something else?

The idea here is to be more strict about naming than OpenCS. You can still use all kind of news but newly created records need to be named more sensible.
The case you mentioned is one of the least problematic. But still, I think not allowing names starting with a digit makes perfect sense.