12 July 1646
On Sunday, July 12, 1646, around four o’clock in the afternoon, the gunpowder tower of Bredevoort Castle, containing 320 barrels of gunpowder, was struck by lightning. Forty people were killed and an unknown number were injured in the ensuing explosion.
The tower caught fire upon impact. The explosion was so violent that the Ambthuis (administrative house) also collapsed. The town suffered extensive damage from the explosion, and almost all houses lost their roof tiles and windows. The houses surrounding the castle had collapsed. For three days, survivors were sought beneath the rubble using shovels and pickaxes.
In 1938, G.H. Rots wrote a series of articles in the Aaltensche Courant about the history of the municipality of Aalten. Regarding the gunpowder tower disaster in Bredevoort, he wrote:
“The year 1646 was once again a disastrous year for Bredevoort. It was the 12th of July, and an oppressive heat hung over the town. Dark clouds gathered, and everything indicated that a severe thunderstorm was imminent. And indeed, lightning soon cleaved the sky, followed by heavy claps of thunder. And suddenly, a terrible blow, followed by a dreadful sound.
Lightning had struck the gunpowder tower, causing the gunpowder present (320 tons) to explode. The entire tower was blown apart, as was the nearby Ambthuis; tiles were torn from almost all houses, and windows were blown in by the air pressure. The number of deaths in that disaster amounted to 19 at the castle and the Ambthuis alone. There were also numerous deaths in other houses in the town.”

Victims
“The deceased included, among others, the Governor of the city Willem van Haersolte and his spouse, the Drostinne Cathrijne van Brakel and her eight children, and her niece Berentjen van Brakel. Furthermore, Joh. van Langen, lieutenant to Georg Ernst Count of Bronkhorst, and also his French mistress (sic) Jeanne van Sédan. An elderly woman present there, Maria Glazen, along with the manservant and the maid, were also among the victims.
The sentry on duty, named Hendrik Otterpoëll, was buried under the ruins. In other parts of the town, the house of Jan Stenneken was destroyed. He and his wife Marycken van der Halle were killed. The names of the dead in other parts of the town were Derk Trix, ensign, Harmen ter Male, F. zum Moorelagen, Bailiff of Winterswijk, and his wife Janne Beerninck, with her sister Christine Beerninck, widow of the late N. Brinkhorst, judge of Haaksbergen.
The house of Berent Grimme was destroyed; his wife and four children lost their lives. The house of Casper Evers was hit, under which three people were killed, named Arent Hamaeker, a child of Berent Maes, and a child of Herman Broekman. Under the house of Derrick ter Woerle Wiltschut, three of his children were killed, as well as the soldier Gerrit Jansen and Jan Schulten.
We have specifically mentioned these names because one might perhaps derive names of those living today from them.”
The deceased who lay under the rubble of the Ambthuis were laid out on July 15 at the home of the widow of the late minister D.J. Verhagen. The drost (bailiff) with his wife and eight children were buried on the morning of Thursday, July 16, in the choir of St. George’s Church. It is not clear how many people remained under the rubble. In total, forty people died that day. The sources make no mention of the number of victims who were injured.
One son of Drost Wilhelm van Haersolte survived the disaster. Anthony, as he was named, happened not to be home that day: he was staying in Zwolle. He continued the family line in Zwolle and founded the Haersolte Almshouse there, which is assumed to be connected to the disaster in Bredevoort.
