"Saint Mel-AN-jel"
* Mel is pronounced as in "melon".
* AN is pronounced as in "fan".
* jel is pronounced as in "jelly".
However, some people might pronounce it with a Welsh accent, which would sound more like:
"Saint Mel-an-gell"
* The an in this pronunciation is closer to the sound in "aunt" rather than "fan".
Ultimately, the best way to be sure is to ask someone who is familiar with the name and its pronunciation.