Region: Western Europe · Coordinates: 51.462, 8.849 · 4 events
| Year | Source | Account |
|---|---|---|
| AD 772 | Royal Frankish Annals | After the general assembly at Worms, Charles invades Saxony, takes the castle of Eresburg at the first attack and destroys the idol the Saxons called Irminsul. During his three days' stay the water is said to have dried up, and at noon water gushed from the valley beside the mountain |
| AD 776 | Royal Frankish Annals | Just as the king crosses the Alps, news arrives that the Saxons have taken Eresburg and driven out the Frankish garrison; they besieged Sigiburg but, through a sortie of its garrison, were chased all the way to the River Lippe |
| AD 784 | Royal Frankish Annals | Charles gathers his army again and goes to Saxony; plundering near the Lippe, he cannot advance further because of winter cold and floods, and winters at Eresburg |
| AD 785 | Royal Frankish Annals | Having summoned his wife and children to Eresburg and posted a garrison, Charles, with a swift army, stirs up Saxon villages all winter long, plundering them and inflicting great damage on Saxony |