Calverts

The  were a family with great political influence in the United States and all around the world before the Great War. The Calverts were likely involved in espionage, specifically in support of the Chinese as a bunker containing Chinese arms, ammunition and computers is concealed beneath a conservatory on their mansion's grounds. The bunker appears as part of The Velvet Curtain as a part of a Chinese plot to destroy the recon submarine SSN-37-1A before the Americans could extract intelligence from it.

According to Desmond Lockheart, the family owned half of Maryland and practically "had a deed to the US Government". At the height of its power, the family had three senators, seven members of the House of Representatives, and two state governors in its ranks. It even sported a front-runner for the office of President until "that scandal with the dog" put him or her out of contention. Desmond was apparently involved in the discovery or manufacture of this scandal as he states he's "very proud of it".

Another member of the family was Professor Calvert, Desmond's nemesis and an accredited expert in cognitive robotics. Transferred to the Medical Facility St. Aubin by his brother, Senator Calvert, he managed to survive the Great War by extracting his brain from his body.

Trivia

 * The in-game family was likely inspired (or a direct allusion to) the real-life Calvert family, which owned the royal charter to Maryland from the founding of the colony until the Revolutionary War.
 * The in-game Mansion is a reference to the Calvert Mansion in Riversdale, Maryland.
 * It is likely the Calverts are, at least partially, based on the real-life Kennedy family.