Review for LEGO set 10176 King's Castle from bricklink.com
“Lego's US Shop at Home Summer 2006 catalog gives the name as just King's Castle. In the Fall 2006 catalog, the name is finally given as Royal King's Castle, matching the website. And, that same Fall 2006 catalog uses "Knights" instead of "King's" in naming set 6090. But it... More switches the normal order of "Knights" and "Royal" and gives it as Knights' Royal Castle.”