Okay so when you get to the part were you can recruit blade members, has anyone tried getting married and recruiting there significant other. If so and if it does work do they still do there marriage duties while being part of the blades?
No, but I married Benor after he became a Blade. Then I took him to help me kill a dragon for a bounty. We'd already fought one dragon with him as a blade and a couple before that. So imagine my surprise when he suddenly freaked out and started yelling "I'm not sticking around to fight a dragon!"

He ran off, leaving me to fight the dragon alone. Your spouse will also live either at their own house with you or one of your houses - I'd sort of hoped they'd find a nook for us in the Blade compound.
Thankfully, I had a pre-courtship save. No more marrying a Blade. Too bad - a gal has to appreciate a guy who comments "good punch" after she beats the stuffing out of him.