Lady Penelope, I think your name would be more properly pronounced Pee...knee...low...pee, or Penny...lowpy.
Peeneelowpee would be best, as it lends itself more readily to limericks.
How about Michael? Mi chay ell. Not Mykal Thomas Tho mass/thom ass. Not Tomass, anyway. Peter Pet er. Not Peeter Matthew Matt hew. Not Mathew, unless spelled that way. Luke Lukky/luhkh. Not Loouk Everyone's name has certain recognised pronunciations, the spelling notwithstanding. Ralph is just one with a specifically English pronunciation.