ISLEWORTH, commonly THISTLEWORTH, (Middlesex) on the Thames, W. of Brentford. Richard K. of the Romans had a palace here, which was burnt down by the Londoners in an insurrection. Bet. this place and Worton there was a mill in the R. of Q. Eliz. for the mf. of copper and brass, which was melted and forged out of the ore brought up from Mendip-Hills in Somersetshire. Here are 2 ch. scs.