I pronounced almost all the names in the Cosmere wrong, but the real pronunciations are much cooler.
Elend (being German), is AY-lind, which also means Elendel is AY-lind-el. (The problem with this is that his nickname, El, would sound like "Ale".)
Jasnah is YASS-nah.
Kelsier is probably pronounced the French way, Kell-syay. (I refuse.)