Doña Martina Céspedes was a most unusual woman who lived in the South American city of Buenos Aires during the British invasions of 1806 and 1807.  Why so unusual? Because she captured 12 British soldiers, then convinced the British commander to list the soldiers as having been killed, and promptly started to marry the 'prisoners' off to her relatives!

So, how did this come about? In 1806 there was a British invasion of the region of Rio De La Plata, in South America, by the city of Buenos Aires. (In modern times this is the capital city of Argentina). At first the capture of the city was successful and the English commander, Commodore Home Popham, sent over £1,000,000 ($1,800,000) back to England with the message that he had been successful and that Buenos Aires was English.  
But ... for many reasons this finally failed and his troops and his army commander, Colonel Beresford, were taken prisoner.
The next year, in 1807, more British troops arrived to retake the city. The fighting was very bloodthirsty.

This is where Martina Céspedes comes into the story...
During the fighting for the city Martina Céspedes left the door to her house open. As British troops entered it to escape the street to street fighting they were hit on the head and thrown down into a cellar. By the time the fighting had passed the house there were about a dozen British soldiers that had been caught.
Doña Martina Céspedes then fed them food and gave them beer and enticed them to stay hidden from the fighting - not surprisingly they agreed and remained in the cellar.

After the British surrender, the Buenos Aires commander, Liniers, started to hand over the British prisoners. During one of the meetings between the City commander (Liniers) and the British commander (Whitelocke),  Martina burst into the room. She informed Liniers that the number of prisoners was wrong since she and her two sisters had twelve of them in their house.
Martina Céspedes told the astonished commanders that she was only going to hand over ten British prisoners because her two sisters had decided to marry the other two!!!
Trying to keep a composed expression on his face, Liniers replied that he found it impossible to agree with her because under the terms of the treaty he had just signed he had to return the soldiers to their country.

 "It does not matter" - Martina said with resolution - " we have already considered that possibility. Your Excellency can include them amongst the dead, because none of them want to leave Buenos Aires!"

... and that is exactly what happened ... 12 British soldiers were listed as 'killed in action'  ... but 2 of them married Martina's sisters and the other 10 remained behind in the growing city of Buenos Aires.