(officially The Convocation of the Tinners of Cornwall); representative body of the Cornish stannaries (chartered 1201 by King John); due to significant proportion of Cornwall's population involved in tin trade, wielded considerable power; South Australia founded on Cornish parliamentary law; convened at the pleasure of the Duke of Cornwall; usually sat at Stannary Palace Lostwithiel; suspension of Stannary Parliament and curtailing of tinners' tax exemption rights in 1496 is seen to be one of the factors in 1497 Cornish rebellion; according to Thomas Pitt, no Stannary Parliament sat between 1710 and 1750, though efforts had been made from 1744 to try to get the Parliament recalled; last session of the Stannary Parliament convened in Truro in 1752, being adjourned in September 1753; because Stannary charters never been revoked, some argue that powers and rights of Stannary Parliaments are still extant