Guthrum was a Viking king from Scandinavia, best known for his conflicts with Alfred the Great, the king of Wessex, England. The exact time of his birth is still debated, but it is believed to be sometime around 835 CE. There is also very limited information about his parents. The time of his accession to the throne is also debated. However, it is generally believed that by the early 870s, out of all the Danish chieftains, he was the one to become a king. In 874, he finally waged a war on the English lands to prove his might in England. However, being a smart man, he first attacked the kingdoms of Mercia and Northumbria, and in 876, he fought his first battle with King Alfred the Great. Several battles were fought between the two. Eventually, Guthrum emerged victorious and captured Alfred. Alfred, knowing well that he was losing, resorted to a peace treaty with Guthrum. However, Guthrum broke the treaty. In 878, at the battle of Edington, Guthrum lost to Alfred. The ‘Treaty of Wedmore’ thus came into existence. Guthrum was baptized as a Christian, with Alfred becoming his godfather. Following his baptism, he was known as Athelstan. The treaty had also allotted Guthrum lands toward the east, away from Wessex’s border, where he passed away in 890.