Dashed left edge = started before April 1791 ·
Dashed right edge = ongoing beyond April 1791
Events in April 1791 1
1791 – 1868James Buchanan15th President — only bachelor presidentJames Buchanan (Apr 23, 1791 – Jun 1, 1868) was the 15th President 1857-1861 and the only president never to marry. He failed to prevent the secession of Southern states and is often ranked among the worst presidents.