who supported the foundation of a stone church dedicated to the Mother of God in Kiev. Sviatoslav also supported the compilation of ecclesiastic works. Two izborniki or miscellaniescollections of excerpts from the Bible and from theological workswere completed under his auspices in 1073 and 1076. According to the Izbornik of 1073, Sviatoslav, who is praised as a "new Ptolemy", had by that time collected a great number of spiritual books. Sviatoslav's rule was short and uneventful. His dethroned brother first fled to Poland, but Duke Boleslav II, who was Sviatoslav's son-in-law, expelled him from his lands. Next Iziaslav sought the assistance of the German monarch, Henry IV. The latter, in 1075, sent his envoysincluding Sviatoslav's brother-in-law, Burchardto Kiev to collect more information. According to the Primary Chronicle, "in his pride", Sviatoslav "showed them his riches", displaying them "the innumerable quantity of his gold, silver and silks". In 1076 Sviatoslav sent reinforcements to Poland to help his son-in-law against the Bohemians. Sviatoslav died on 27 December 1076. The Primary Chronicle writes that "the cutting of a sore" caused his death. He was buried in the Holy Savior Cathedral in Chernigov. Within a year, his elder brother Iziaslav was restored and Sviatoslav's sons lost most parts of his domains. Ancestry According to the Lyubetskiy sinodik, Sviatoslav's wife was Killikiya or Kelikia (Cecilia). On the other hand, German chroniclers write that his wife was Oda of Stade, a sister of Burchard, the Provost of Trier, and she gave birth to one son. A portrait depicting Sviatoslav and his family in the Izbornik of 1073 shows that he had five sons and four of them were adults at the time their portrait was made. Based on these sources, Sviatoslav married twice. According to Dimnik, Sviatoslav married his first wife, Killikiya, between 1043 and 1047. Their first child seems to have been a daughter, Vysheslava. Her eldest brother Gleb became prince of Tmutorakan and later of Novgorod. The second son of Sviatoslav and Killikiya was Oleg, the future prince of Chernigov. Davyd, the future prince of Novgorod and Chernigov, was born around 1051. Roman, who became prince of Tmutorakan, was born around 1052. Sviatoslav married his second wife, Oda of Stade, in about 1065, according to Dimnik. Oda, the daughter of Lothair Udo I, Margrave of the Nordmark, was in some way related to Henry III, Holy Roman Emperor. She gave birth to Sviatoslav's fifth