Not "nearly" and not "Celeborn Teleporno".

Celeborn is his name in the language Sindarin.

Teleporno is his name in the language Quenya.

I think you can see the similarities between "Cele/Tele" and "born/porn(o)", right?

Similarly Galadriel (Sinadrin) has a Quenya name - Altáriel.

We have very similar situations here on Earth with differences in spelling/pronunciation between languages (and ages): James vs Iacobus or Catherine vs Aikaterínē.