nothing new over there Adams and Harrison families had two each.
All of these are related by blood:
FDR (17) - Washington, J.Q. Adams, Van Buren, Taylor, Fillmore, Pierce, Grant, Hayes, Garfield, Cleveland, T. Roosevelt, Taft, Coolidge, Nixon, Ford, both Bushes
Both Bushes (16) - Washington, Fillmore, Pierce, Lincoln, Grant, Hayes, Garfield, Cleveland, T. Roosevelt, Taft, Coolidge, Hoover, FDR, Nixon, Ford, each other
Taft (15) - both Adamses, Fillmore, Hayes, Garfield, Cleveland, B. Harrison, Harding, Coolidge, Hoover, FDR, Nixon, Ford, both Bushes
Coolidge(15) - Washington, both Adamses, Fillmore, Pierce, Grant, Cleveland, B. Harrison, Taft, Hoover, FDR, Nixon, Ford, both Bushes
Ford (15) - Fillmore, Lincoln, Grant, Hayes, Garfield, Cleveland, B.Harrison, Taft, Harding, Coolidge, Hoover, FDR, Nixon, both Bushes
Fillmore (12) - both Adamses, Grant, Cleveland, Taft, Coolidge, Hoover, FDR, Nixon, Ford, both Bushes
Nixon (11) - Fillmore, Hayes, Taft, Harding, Coolidge, Hoover, FDR, Ford, Carter, both Bushes