Monday 9th of September 1839 (+) — Serial poisoner Maria Swanenburg is born
Wednesday 26th of January 1848 (+) — Victim of Maria Swanenburg aka Goeie Mie Hendrik Frankhuizen is born
Friday 4th of December 1863 (+) — Victim of Maria Swanenburg aka Goeie Mie Catharina Swanenburg is born
Sunday 22nd of October 1865 (+) — Victim of Maria Swanenburg aka Goeie Mie Johanna Swanenburg is born
Friday 25th of May 1866 (-) — Victim of Maria Swanenburg aka Goeie Mie Johanna Swanenburg is poisoned with arsenic by Maria Swanenburg aka Goeie Mie
Friday 25th of May 1866 (-) — Victim of Maria Swanenburg aka Goeie Mie Catharina Swanenburg is poisoned with arsenic by Maria Swanenburg aka Goeie Mie
Thursday 21st of January 1869 (+) — Victim of Maria Swanenburg aka Goeie Mie Johannes Swanenburg is born
Thursday 12th of May 1870 (-) — Victim of Maria Swanenburg aka Goeie Mie Johannes Swanenburg is poisoned with arsenic by Maria Swanenburg aka Goeie Mie
Monday 4th of December 1871 (-) — Victim of Maria Swanenburg aka Goeie Mie Pieternella Swanenburg is poisoned with arsenic by Maria Swanenburg aka Goeie Mie
Thursday 26th of January 1871 (+) — Victim of Maria Swanenburg aka Goeie Mie Pieternella Swanenburg is born
Tuesday 24th of February 1874 (+) — Victim of Maria Swanenburg aka Goeie Mie Clement Swanenburg is born
Wednesday 14th of November 1877 (-) — Victim of Maria Swanenburg aka Goeie Mie Clement Swanenburg is poisoned with arsenic by Maria Swanenburg aka Goeie Mie
Monday 30th of May 1881 (-) — Victim of Maria Swanenburg aka Goeie Mie Cornelia De Hees-Van Der Linden is poisoned with arsenic by Maria Swanenburg aka Goeie Mie
Swanenburg and De Hees were sisters in law.
Thursday 3rd of November 1881 (-) — Victim of Maria Swanenburg aka Goeie Mie Arend De Hees is poisoned with arsenic by Maria Swanenburg aka Goeie Mie
Friday 15th of July 1881 (-) — Victim of Maria Swanenburg aka Goeie Mie Willem De Hees is poisoned by Maria Swanenburg aka Goeie Mie
De Hees was Swanenburg's nephew.
Wednesday 12th of December 1883 (-) — Victim of Maria Swanenburg aka Goeie Mie Mien Frankenhuizen-Van Der Linden is poisoned with arsenic by Maria Swanenburg aka Goeie Mie
Thursday 22nd of November 1883 (-) — Victim of Maria Swanenburg aka Goeie Mie Catharina Aben is poisoned with arsenic by Maria Swanenburg aka Goeie Mie
Wednesday 19th of December 1883 (-) — Victim of Maria Swanenburg aka Goeie Mie Hendrik Frankhuizen is poisoned by Maria Swanenburg aka Goeie Mie
Thursday 23rd of April 1885 (x) — Start of the trial against Serial poisoner Maria Swanenburg
Swanenburg was charged with the poisoning of over 100 people, killing at least 30.
Wednesday 13th of January 1909 (+) — Communist and presumed arsonist Marinus Van der Lubbe is born