Willem de Vlamingh was born on November 28, 1640.
Willem de Sitter was born on May 6, 1872.
Willem de Kooning was born on April 24, 1904.
Frederik Willem de Klerk was born on March 18, 1936.
Willem de Heusch died in 1692.
Willem de Mérode died in 1939.
Willem de Rooij was born in 1969.
Willem de Keyser was born in 1647.
Willem de Keyser died in 1692.
Willem De Looper was born in 1932.
Willem De Looper died in 2009.
Willem de Zwart was born in 1862.
Willem de Zwart died in 1931.