List of United States Presidents by genealogical relationship

Direct descent
This is a list of s who are related to each other by direct descent.


 * and (father and son)
 * and (grandfather and grandson)
 * and (father and son)

Indirect relatives
This is a list of some of the closer blood relations, other than direct descent, between US Presidents. (See to understand the terms used here.)


 * second cousin of
 * fourth cousin three times removed of, fifth cousin twice removed of
 * seventh cousin of
 * fifth cousin once removed of, sixth cousin once removed of , fifth cousin once removed of
 * fifth cousin once removed of (his grandfather, President, was a fourth cousin once removed of Tyler)
 * third cousin three times removed of
 * fourth cousin five times removed of, fifth cousin four times removed of , sixth cousin once removed of , eighth cousin once removed of , fifth cousin once removed of , sixth cousin once removed of , seventh cousin of
 * fifth cousin twice removed of, eighth cousin twice removed of
 * third cousin six times removed of, fourth cousin five times removed of , sixth cousin four times removed of , sixth cousin four times removed of , seventh cousin twice removed of , sixth cousin twice removed of , ninth cousin once removed of , seventh cousin once removed of
 * fifth cousin four times removed of, fourth cousin five times removed of , seventh cousin three times removed of
 * fourth cousin three times removed of, third cousin four times removed of , half fourth cousin three times removed of , seventh cousin once removed of , sixth cousin twice removed of , fourth cousin once removed of , sixth cousin once removed of , half eighth cousin of , fifth cousin of (although his wife, , was a niece of Theodore), sixth cousin twice removed of , seventh cousin once removed of
 * eighth cousin three times removed of, seventh cousin twice removed of , ninth cousin of , eighth cousin once removed of , eighth cousin once removed of
 * fifth cousin five times removed of, seventh cousin four times removed of , sixth cousin three times removed of , sixth cousin three times removed of , seventh cousin three times removed of , fifth cousin four times removed of , seventh cousin twice removed of , ninth cousin once removed of , eighth cousin once removed of , eighth cousin once removed of , sixth cousin twice removed of , eighth cousin twice removed of
 * ninth cousin of, sixth cousin of
 * fourth cousin five times removed of, fifth cousin four times removed of , seventh cousin four times removed of , sixth cousin five times removed of , sixth cousin three times removed of , fourth cousin three times removed of , seventh cousin twice removed of , seventh cousin three times removed of (also eighth cousin twice removed of , a niece of Theodore), sixth cousin three times removed of , sixth cousin twice removed of , tenth cousin of , sixth cousin three times removed of , ninth cousin four times removed of , seventh cousin of . Note that these relationships then also apply to , each an additional generation removed.

The list above includes the closer, more significant relationships. Family trees, particularly those in a limited geographic area, tend to converge relatively rapidly and many family trees going back ten generations or more will connect to more than one dozen U.S. Presidents, if all female ancestors and their descendants are traced. This is why, for example, it is not mentioned that through Robert Wyngate of Sharpenhoe, Bedfordshire, J.Q. Adams and W.H. Harrison are eighth cousins.

There are also numerous relationships by marriage which are not presented in this article. For example, Richard Nixon was the father-in-law of Dwight Eisenhower's grandson. George Washington's half aunt married James Madison's half first cousin once removed. Woodrow Wilson married (as his second wife) the great-great-great-niece of Thomas Jefferson.

Presidents related to European royalty
This is a list of presidents of royal descent. Note that since all of these Presidents are related to English or Scottish monarchs, they are also all related to each other, though very distantly.


 * (descendant of )
 * (descendant of Edward III of England)
 * (descendant of )
 * (descendant of Edward III of England)
 * and his grandson, (descendants of Edward I of England)
 * (descendant of Edward I of England)
 * (descendant of )
 * (descendant of )
 * (descendant of Edward I of England)
 * (descendant of Edward III of England)
 * (descendant of Edward I of England)
 * (descendant of )
 * (descendant of )
 * (descendant of )
 * (descendant of Edward III of England)
 * (descendant of Edward I of England)
 * and his son, (descendants of Edward I of England and )