Siegfried Popper was born in 1848.
Siegfried Popper died in 1933.
Catherine Popper was born in 1973.
Julius Popper was born in 1857.
Hans Popper was born in 1903.
David Popper was born in 1843.
Ami Popper was born in 1969.
Albert Popper was born in 1808.
John Popper was born on March 29, 1967.
Karl Popper was born on July 28, 1902.
Josef Popper-Lynkeus was born in 1838.
Frank Popper was born on 1918-04-17.
Frank J. Popper was born in 1944.