Willem de Poorter was born in 1608.
Willem de Poorter died in 1668.
Gaetan De Poorter was born on August 12, 1982, in Ghent, Belgium.
Jo De Poorter was born on August 27, 1966, in Gent, Flanders, Belgium.
Willem de Rooij was born in 1969.
Willem de Keyser was born in 1647.
Willem De Looper was born in 1932.
Willem de Zwart was born in 1862.
Willem de Clercq was born in 1795.
Willem de Mérode was born in 1887.
Willem de Sitter was born on May 6, 1872.
Willem de Vlamingh was born on November 28, 1640.
Jan Willem de Jong was born in 1921.