Theodore and Franklin Roosevelt were sixth cousins.
James Madison and Zachary Taylor was second cousins, i.e. had the same great-grandfather- not really so distant. Franklin Roosevelt was a 4th cousin once removed of Ulysses Grant.
Theodore Roosevelt and Franklin Roosevelt were distant cousins. Taylor and Madison were second cousins.
I know of only two... Abe Lincoln and Theodore Roosevelt. The two Roosevelt presidents are 5th cousins so I sorta wonder if FDR has it too. But I know the above two have been thought to have had it.
If you could trace their ancestry back far enough you could probably find common ancestors for any pair of presidents, so in a way, they are no doubt all related. However, in the usual sense, people are said to be related only if the relationship is known and fairly close, so in this sense, US presidents are not all related. Some, of course, have been closely related to each other.
There were two Adams (John and John Quincy, father and son), two Harrisons (William and Benjamin, grandfather and grandson), two Johnsons (Andrew and Lyndon, no relation), two Roosevelts (Theodore and Franklin, distant cousins), and two Bushes (George and George W., father and son).
only Two presidents have been tried
Two.
The five surnames shared by two U.S. Presidents each are Adams, Harrison, Johnson, Roosevelt and Bush. The Johnsons were not related as far as I know. The Adamses and the Bushes were father/son, the Harrisons were grandfather/grandson, and the Roosevelts were distant cousins.
Theodore (Teddy) Roosevelt and Franklin D Roosevelt were fifth cousins. There are other United States Presidents who are fifth cousins once removed or further removed.
I know of only two... Abe Lincoln and Theodore Roosevelt. The two Roosevelt presidents are 5th cousins so I sorta wonder if FDR has it too. But I know the above two have been thought to have had it.
There have been 4 pairs of related US Presidents and 1 pair of unrelated ones that shared the same last name:* John Adams (2nd) and John Quincy Adams (6th) -- father and son* William Henry Harrison (9th) and Benjamin Harrison (23rd) -- grandfather and grandson* Theodore Roosevelt (26th) and Franklin D Roosevelt (32nd) -- distant cousins(FDR also married Teddy's niece Eleanor, also his cousin)* George H. W. Bush (41st) and George W. Bush (43rd) -- father and son* Andrew Johnson (17th) and Lyndon B. Johnson (36th) -- unrelated
I would say three -- two father-son sets, the Adams and Bush families and one grandfather-grandson, the Harrisons. The two Roosevelts were distantly related - 5th cousins and there are some other distant cousin relationships . There was another "almost" father-son pair, the Tafts. President Taft' son Robert was an important Senator who was seriously considered for the presidential nomination.
There were several well-known Spanish conquerors. Two of the most notorious were Hernan Cortes and Francisco Pizarro and the two were distant cousins.
Theodore Roosevelt (#26) was a distant cousin of Franklin Roosevelt (#32) .
The Adams, John and John Quincy were father and son presidents. The United States has also had a grandfather and grandson pair--William Henry and Benjamin Harrison. Also distant cousins: the Roosevelts Teddy and Franklin Delano.
The closest pair are James Madison and Zachary Taylor who were second cousins, They had the same great- grandfather.
John Adams, James Monroe, Bob
A family system with many relatives could be: Two sets of Grandma and Grandpa Mom and Dad Brothers and sisters aunts and uncles cousins second cousins
The two Johnsons, Andrew and Lyndon B. were not related to each other. John Quincy Adams and John Adams were father and son as were the two Bushs. The two Roosevelts were cousins.