What do the following people have in common?

Nathaniel Hawthorne
Stephen Foster
Calvin Coolidge
Louis Armstrong
Abigail Van Buren


Answer:

They were all born on July 4th.

Nathaniel Hawthorne - 1804
Stephen Foster - 1826
Calvin Coolidge - 1872
Louis Armstrong - 1900
Abigail Van Buren - 1918


Note: Also Ann Landers, the twin sister of Abigail.