Who was the first Secretary of the Treasury of the United States?

At the inauguration of the constitutional government in 1789 Alexander Hamilton, George Washington's former military aide and renowned financier, was appointed the first Secretary of the Treasury and thus he became the architect of the structure of the Department. Desirous of a strong, centrally controlled Treasury, Hamilton did constant battle with Thomas Jefferson, then Secretary of State, and Albert Gallatin, then a Congressman, over the amount of power the Department of the Treasury should be allowed to wield. He designed a Treasury Department for the collection and disbursing of public revenue, but also for the promotion of the economic development of the country.

Source: Department of the Treasury