| Trivia | President |
| Never voted, even in own election | |
| Niece Harriet Lane served as First Lady | |
| First President to later serve in Congress | |
| Barbara Bush was his 4th cousin 4 times removed | |
| First V.P. since Van Buren to immediately succeed to presidency by election | |
| Married same woman twice (her divorce hadn't been finalized) | |
| Only president with an M.B.A. | |
| Birth name was Leslie Lynch King, Jr. | |
| Impressed friends by writing in Greek and Latin simultaneously | |
| Switched to the other major party at age of 51 years old | |
| Last president with facial hair | |
| Last president not to go to college | |
| He and his wife sometimes spoke in Chinese at events to prevent the guests from eavesdropping | |
| Proposed to wife after one date | |
| Widely believed to have been inaugurated while drunk | |
| Last president to have been born or died on July 4 | |
| First president born in a hospital | |
| Only patent holder to become President | |
| Nickname Old Kinderhook possible source of expression O.K. | |
| Ran after presidency with the Know Nothing Party; won only Maryland | |
| Born last name Blythe, he took stepfather's last name at age 14 | |
| Suffered heart attack, stroke, and aneurysm in first 5 years in office | |