Among the positions held by Chaucer are what?

Geoffrey Chaucer had many jobs in his life, including that of a noblewoman's page, an esquire in the royal court, comptroller of the customs for the Port of London, and clerk of the King's works. He also spent time in the Army.

Explanation:

a page, a soldier, an esquire, a diplomat, a customs controller, justice of the peace, member of Parliament, Clerk of the Works of Westminster, Commissioner of Walls and Ditches, and Deputy Forester of the Royal Forest.