Gortexfogg

I'm reading a book originally written in Portuguese but translated into English. It has there sort of rebel soldiers called jagunços. I've been pronouncing this in my head as "ja(as in jaw)-gun-so(as in sew)". But, I remembered in Spanish that j can be pronounced like a h, so I was wondering if that might also be the case in Portuguese. If someone could shed some light on how to correctly pronounce this word I'd be really grateful.