I have named my son Orien. We Pronounce it o-ri-en although everyone who first reads it pronounces it Ori-en. We choose to spell his name Orien because Orion looks similar to Onion. I feel my son will have trouble with his name all his life but I love it. It's strong it's powerful and overall a great name. We live in a small town in the UK and no one likes his name but I like it like that because he will always be the only one around here.
In the United States, at least, Orion is also occasionally pronounced OR-ee-ən. The city of Lake Orion, Michigan, uses this pronunciation, as does Orion Samuelson, best-known agricultural broadcaster in the country and Radio Hall of Fame member.
In Greek, the name would have been pronounced o-ree-on, as the sound of ie (as given by this site's pronunciation key) was spelled "ai", whereas the u sound did not exist, making the modern English pronunciation originally impossible.Also, the light about a person is spelled "aura" and derived from a Latin word of the same spelling, meaning "breath".