"Charity, my dear," said Mr. Pecksniff, "when I take my chamber candlestick to-night, remind me to be more than usually particular in praying for Mr. Anthony Chuzzlewit; who has done me an injustice." From Martin Chuzzlewit 1843-1844 by Charles Dickens

The bedroom was called the chamber, or bed chamber in the distant past, ergo the name chamberstick. Chambersticks were specifically used to light the way to ones bed chamber each night. Some references place the use of chambersticks to the late seventeenth or early eighteenth centuries.