The Star Chamber (Latin: Camera stellata) was an English court that sat at the royal Palace of Westminster, from the late to the mid-17th century (c. 1641), and was composed of Privy Counsellors and common-law judges, to supplement the judicial activities of the common-law and equity courts in civil and criminal matters. It was originally established to ensure the fair enforcement of laws against socially and politically prominent people sufficiently powerful that ordinary courts might hesitate to convict them of their crimes. However, it became synonymous with social and political oppression through the arbitrary use and abuse of the power it wielded. In modern times, legal or administrative bodies with strict, arbitrary rulings, no "due process" rights to those accused, and secretive proceedings are sometimes metaphorically called "star chambers". Origin of the name The first reference to the "star chamber" is in 1398, as the Sterred chambre; the more common form of the name appears in 1422 as le Sterne-chamere. Both forms recur throughout the fifteenth century, with Sterred Chambre last attested as appearing in the Supremacy of the Crown Act 1534 (establishing the English monarch as head of the Church in England). The origin of the name has usually been explained as first recorded by John Stow, writing in his Survey of London (1598), who noted "this place is called the Star Chamber, at the first all the roofe thereof was decked with images of starres gilted". Gold stars on a blue background were a common medieval decoration for ceilings in richly decorated rooms: the Star Chamber ceiling itself is still to be seen at Leasowe Castle, Wirral, and similar examples are in the Scrovegni Chapel in Padua and elsewhere. Alternatively, William Blackstone, a notable English jurist writing in 1769, speculated that the name had been derived from the legal word "starr" meaning the contract or obligation to a Jew (from the Hebrew שטר (shtar) meaning 'document'). This term was in use until 1290, when Edward I had all Jews expelled from England. Blackstone thought the "Starr Chamber" might originally have been used for the deposition and storage of such contracts. However, the Oxford English Dictionary gives this etymology "no claim to consideration." Other etymological speculations mentioned by Blackstone include the derivation from Old English steoran (steer) meaning "to govern"; as a court used to punish cozenage (in Latin: crimen stellionatus); or that the chamber was full of windows.