Simplify the following text for a Grade 8 native English-speaking person.
Original: Seymour and Catherine moved into the castle and brought with them ladies to attend on the Queen Dowager , as well as gentlemen of the household and Yeomen of the guard .
Simplified: At this time , Seymour and Catherine moved into Sudeley . They were accompanied by Lady Jane Grey and brought with them ladies to attend on the Queen Dowager , as well as gentlemen of the household and Yeomen of the guard .