The word "chatelaine" refers to the lady who, in the Medieval times, was in charge of the day-to-day castle functions. The chatelaine ordered supplies, did the bookkeeping and supervised the servants. She also taught the children who lived in the castle and served as a guide to the guests. One of her most important responsibilities was to keep the keys to the castle. The name came to refer to the belt that held the tools she needed.
Chatelaine Jewelry, this was worn as a ring that would dangle off the hand
This cut steel chatelaine was worn by ladies to hold important household items such as keys, scissors and thimbles.