Imagine the conversation that came before this response? Response: In 1363 the town was made a staple port.

 + What was the Parliamentary constituency of Calais?;
 + Calais (constituency) Calais was a former constituency of the Parliament of England.;
 + When did the English relinquish control of Calais?;
 + The French town of Calais was under English rule from 1347 until 7 January 1558.;
 + How many seats were there in the Parliament?;
 + During part of that time it was represented in the Parliament of England by two members.;
 + Was there a treaty in place?;
 + In 1360 the Treaty of Brétigny assigned Guînes, Marck and Calais – collectively the "Pale of Calais" – to English rule in perpetuity, but this was only informally and partially implemented.;
 + What did the French do to gain back control of Calais?;
 + 