I'm not talking about accents.
Think about the difference in pronunciation for example between word pairs like:
stripped / striped
hatter / hater
canned / caned
barring / baring
punny / puny
The first examples are all based on words where the consonants aren't doubled in the base word: strip, hat, can, bar, pun. But an extra consonant is added to preserve the vowel sound, because when you add the suffix (-y, -ed, -ing, -er, etc) the vowel sound after the single consonant changes the sound of the vowel before the consonant, in the same way that many people were taught "magic e" (can / cane, bar / bare) - the technical term is a split phoneme.
But in American English spelling, there are certain examples where this isn't done, and the single ending consonant of the original base word is retained. For example:
traveling
canceled
jewelery
cruelest
paneling
It's just a spelling rule difference. But to me having the sense that a single consonant with a vowel sound either side changes the first vowel, it makes me mentally read them as traveeling, canceeled, jew-ell-erry, cru-ellest, paneeling.
I know that's not how they are spelt or what it means. It's just what my brain automatically responds when I read words spelt in that way.
So I find it strange when somebody sees the name "Rowenna" and thinks "That says Row-ee-na" because according to English spelling rules, Rowenna could never be Row-ee-na, and Rowena would also not be Row-enn-a.
But I think I have an unusually phonics orientated brain so probably this is just a me thing, and not a universal thing.