If I'm not mistaken again the Olga I was thinking of brought Christians to russia. Her husband was killed. The party in charge bent two birch trees and tied them to the ground. They then tied each of his legs to a tree and then cut the ropes holding the tree down. As the trees snapped back from being bent they tore his body in two.

She left, raised an army somehow(not sure of details) and returned. She said she would not attack the town if each family gave her 1 pigeon. The town agreed and gave her a pigeon from each family. Her army tied a bag of sulfer and fuse to each pigeon and lit it. They then released the pigeons who flew back to the home they knew, in town... Each pigeon then caught fire and exploded in town.

The town which killed her husband was basically burned down to the ground in the resulting inferno.