American Royalt

America obviously does not have nobility or royalty, but in American they are basically the wealthy and powerful and/or  descendants of those families.

Presidential families

Roosevelt 

Rhode Island

Greene

Maryland

Calvert

Caroll

Massachusetts

Apthorp
Cabot
Choate
Crowninshield
Derby

Lowell

Putnam

Governors

Bradstreet

Dudley

Leverett

Wintrhop

New York

Astor 

Bloomberg
Durst

Gardiner
de Gersdorff
Johnson
Livingston
Vanderbilt

Washington, DC

Bradlee