Has anyone heard of this book series?

[silvernitrate]

I read it years ago and for some reason thought of it and now it's bugging me that I don't remember what any of the books are called. The setting is similar to a crusades-era middle east, one of the main characters is gay and I believe his name may start with an 'M'. He's been chosen to control some magic power and one of the female characters is in love with him. There's another dimension that contains jinn and the series is five or six books long. That's about all I remember so if you've read this please let me know because it's really driving me crazy. Thanks.