William Berkeley Lewis (1784 – November 12, 1866) was an influential friend and advisor to Andrew Jackson.
Jackson appointed Lewis as second auditor of the Treasury, a position he was able to retain until the Polk administration.
"[3] Lewis was seen as part of a group of unofficial advisors known as the "Kitchen Cabinet" who helped Jackson formulate policy.
"[8] In 1818 Lewis was involved a Chickasaw treaty side deal that became known as the Salt Lick Reservation controversy.
Lewis assisted James Parton in the publication of his three-volume biography of Jackson by sending him information, letters, and other documents.
Louis R. Harlan described him as a self-important "kitchen Machiavelli" and "conspirator" whose combination of "pomposity and reticence" have left a clouded but generally unfavorable image in the historical record.
[12] In 2018, historians Jeanne and David Heidler have described him as a "toady" and stated that even other members of the inner circle "chafed at his tattling, always served up sadly, and his unctuous manner, always perfectly adjusted to fit Jackson's moods.