What could 100,000 francs get you in the 14th century?

A franc dating from Charles V’s reign, that you can buy on Numiscorner!

A famous medieval knight called Bertrand du Guesclin was ransomed for 100,000 Francs. What could you buy in 14th-century France for 100,000 francs? And was it considered to be a large ransom or quite the opposite?

[Question by u/TheyTukMyJub on r/AskHistorians: link to the original post.]

“I’m reading the chronicles by Froissart and there’s this bit about a ransom that confuses me. It’s not immediately clear for me whether or not the ransom was high or rather too low but politically inopportune. Because both the Prince of Wales as well as his counsel regret the decision to ransom the knight for 100,000 Francs (or rather, regret ransoming him at all – since he would raise 2000 men at arms). Also, it took Bertrand a month to raise the money from the King of France and the Duke of Anjou. Would this be a long period or were they amazed at how fast his ransom was paid?
The text is kind of ambiguous.
So, what could you buy in 14th-century France for 100,000 francs, the ransom of Betrand du Guesclin? Was it considered large for a ransom? If so, how did the French during the Hundred Years’ War pay a large ransom like that?”

Paris, BnF, MS fr. 2609, f. 354v ~ Bertrand Du Guesclin fights in Normandy, wielding his hammer.

My answer

This ransom was quite high. Du Guesclin had made quite a name for himself and the more he was captured the higher his ransoms became. Those 100,000 doubloons (not francs!) weighted around 460kg of gold (roughly 1,014 pounds), which was a massive fortune.

We also need to keep in mind that on one hand a substantial amount of gold and silver mines were discovered in the 16th century, meaning that the value of those precious metals went down after that point in time. More gold is needed today than it was in the 13th and 14th century to buy—let’s say—a horse or a cow, because gold was much scarcer. Therefore it is almost impossible to really evaluate the value of 100 000 doubloons only by its gold value.

On another hand the 14th century saw several monetary crisis because of the Hundred Years War. From 1337 to 1360, the value of gold sunk compared to the value of silver. It is a fact that there was a shortage of silver in France. This shortage resulted in hoarding. Therefore we observe a drastic slowdown in monetary circulation which didn’t help the situation. The Kingdom of France yet regained some economical health during the next period (1360-1385) under the rule of Charles V. However, the value of coins had still a lot diminished compared to what it was in 1330. Nonetheless we can still state that a franc in 1364 weighted 3.885g at 24K. In conclusion, Du Guesclin ransom was worth 118,404 francs.

Paris, BnF, MS fr. 6465, f. 434v ~ Bertrand Du Guesclin is appointed Constable by Charles V, making him the highest ranked officer of the Royal French Army.

Now, we can find a precise account on JStor (links below) of how much Charles V invested in renovating the Louvre between 1364-1368—let’s not forget that Du Guesclin was captured at the battle of Najera, in 1367. To give a very rough idea of how elevated Du Guesclin’s ransom was, Charles V paid the binding of a single book 20 ‘sous parisis’. That was barely more than a franc, yet that was already a lot of money since it was for a very precious book! Also, as one of the construction worker died during the renovations of the Louvre, he’d left behind him a poor widow with paralysed limbs. She received only 6 francs as compensation. 6 francs were also the price for 5 sculptures that were put in a new staircase.

On a side note, we know that Charles V had amassed around 400 000 francs by 1368. It took him a lot of time to hoard it but most of it would be spent by the end of the next year. In that time frame, in a single year, 248,630 francs were used to finance the war and defend the kingdom. Therefore, yes indeed, Du Guesclin’s ransom was astronomic. He was only lucky that his king had quite a fortune precisely when he was captured.

Paris, BnF, MS fr. 6465, f. 456r ~ Death of Bertrand Du Guesclin.

~ Valérie Toureille (ed.), Guerre et société. 1270-1480. Paris: Atlante, 2013, p. 347.
~ Raymond Cazelles, “Les Trésors de Charles V”, in Comptes rendus des séances de l’Académie des Inscriptions et Belles-Lettres (1980), 124/1, p. 214-226; in particular p. 218; online.
~ E. Fournial, Histoire monétaire de l’occident médiéval. Paris: Nathan, 1970, p. 8, 103, 113-114, 117-119.
~ Marc Bompaire, “Compter au XIIIe siècle avec la diversité des monnaies : livres, sous et deniers”, in Comptabilité(S) (2015), 7, online.
~ M. Le Roux de Lincy, “Comptes des dépenses faites par Charles V dans le Château du Louvre, des années 1364 à 1368”, in Revue archéologique (1851-1852), 8/2, p. 670-691, 770-772; in particular p. 690, §57; p. 766, §113, §115; online link 1, link 2.