In The Serpentine Key, Sven Thorvaldson serves as emissary to Vladimir, Prince of Kiev, from Basil II, Emperor of the Eastern Roman Empire, bringing in the Norsemen who would eventually become the Varangian Guard.
Varangian was a term used by the Byzantines to denote anyone from the area we now call the Ukraine, as well as Scandinavia.
In 986 Basil II was in a difficult situation. His nobles were rebelling against him, he had a shortage of military, he had just been catastrophically ambushed at Trajan’s Gate by the Bulgarians and he no one he could really trust. It was not for nothing that the Byzantines were known for political intrigue. In fact the name came to mean political intrigue in later centuries.
Basil had a sister who was yet unmarried and in 988 he came to a decision that was to change the course of history. He sent a proposition to Vladimir, prince of Kiev who was then making himself all too well at home in one of Basil’s Cities, Cherson in the Crimea. If Vladimir would convert to Christianity and send six thousand of his finest warriors, Vladimir could then have the coveted hand of his sister, the Porphyrogenita in marriage.
Ann’s title, the Porphyrogenita, meant literally “Purple Born: she had been born in the chambers made of porphyry, a kind of purple stone and that meant her place in the imperial family as was her brother’s a high status one. One simply did not go marrying one’s imperial sister off to a pagan barbarian war lord who already had eight wives and numerous concubines. There was an uproar in the city. It was the scandal of the century.
What was in this for Vladimir besides the hand of the most eligible bachelorette in all Christendom?
By marrying Anna, Vladimir could ally himself with a very powerful neighbor, one with whom the Rus had long been at odds with. Furthermore, Vladimir had already been religion shopping. He had rejected Judaism and Islam and western Christianity, but the the reports of the high-domed Hagia Sophia– now that he liked. Eastern Orthodox Christianity it would be for him. The six thousand warriors, Vladimir had amassed to take down his brother Yaropolk were getting a tad bit restless. Many of these were mercenaries who had been sent by Vladimir’s kinsman, the king of Norway, to aid Vladimir during his tempestuous little civil war with his brother for control of the land left by their father Sviatoslav. It was said that they told Vladimir when he had no money to pay them as promised, “Show us then, the way to the King of the Greeks!” For before this time, it was not unheard of for Scandinavians to be mercenaries in Byzantine forces, for which the Byzantines paid very well.
So in this way, Vladimir got out of a potentially sticky situation, got the girl (though he had to send away all the extra ladies, of course) and got a new religion with which to bind his divided kingdom of Norse and Slavs together. Basil married off his sister and got some of the most feared fighting forces in the world at the time. One cannot but wonder if some of them were not the legendary Jomsvikings, but that is a subject for another time.
Lars Brownsworth brings us the Byzantine Empire in all her pomp and glitter, political intrigue, poison, assassination and seduction. Most people who consider themselves somewhat knowledgeable about history and even the Roman Empire, fall short when it comes to knowledge of the eastern half that endured for another eleven centuries after Rome fell to the barbarians in her midst. As Roman troops withdraw from Britain to cover their losses back at home and Christianity begins to sweep the Empire, a new leader emerges to change the face of Rome forever. Any history of Byzantium rightly begins with Constantine and it is on his shoulders that Brownsworth leaves the beginning.
There has been some debate on what Greek Fire actually was. Most historians agree that it made use of petroleum and others throw around combinations of pine resin, quicklime, calcium phosphide, sulfur, or niter. So then let us briefly examine some of these components to the best of my ability, bearing in mind that chemistry has never one of my strong subjects!
Of the two plants known as hellebore to the ancients, only one was true hellebore. They were not related, but both were very poisonous. Black hellebore Helleborus niger is the true hellebore and sometimes used as a purgative. White hellebore or false hellebore (Veratrum album ) is the subject of this article. It is most famous for its role in its use in poisoning the water supply of the residents of Kirrah by their Greek besiegers. The besieged were so weak from the emetic effects of the plant, they were unable to withstand the assaults of the enemy upon their city.

immunity to belladonna as related in George Buchanna’s History of Scotland, vol 6:
Poison! Just the word would cause a medieval citizen of Constantinople to cast a furtive glance into his or her cup. Almost all the poisons available to the people of the Middle Ages were derived from plants. Not all who were suspected of dying of poison, necessarily did so, but it is a testament to how common it was and much the danger was ever present on the mind of especially upper class Byzantines.
Of the ones we will talk about in this series, most notorious is Aconitum, among many other names also known as Monk’s Hood, Wolfsbane (for its reputation in poisoning wolves) and Queen of Poisons. It belongs to the family Ranunculaceae, including over 250 species. The Byzantines would have been very familiar with this deadly poison, dubbing it lykotonon — “wolf slaying”. Historically, Cleopatra VII of Egypt was said to have poisoned her brother Ptolemy XIV with aconite. In classical mythology, the sorceress Medea attempted to have king Aegeus unwittingly kill his own son, Theseus with a cup poisoned with aconite. It is said to have sprung from the spittle of Cerberus, famed three-headed dog of Greek myth. Even touching this deadly plant, especially the roots, can gain you an unpleasant death.