From Shakespeare's Cymbeline -- what does it mean? "Take my power i' the court for yours." What does it mean?

What is the meaning of "a silk train" and "pagegirls" in this sentence? "I have a tiara . . . and a silk train. You should see that train! It has to be carried by twelve pagegirls." I don't really understand what it means in this sentence.. Please help!! :)

What's the meaning of "please don't stand on my accord?" it is from "Sorry to interrupt…Noodle Church, district nine,” he said as The Executive got up to shake his hand. “Please don’t stand on my accord. I wanted to thank you for adding me as a friend on PeopleFace....