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Birth:          1025 of Turov, Polesye, Byelorussia
Death:          3 Oct 1078 Tchernigov
Cause of Death: slain

Notes
https://en.wikipedia.org/wiki/Iziaslav_I_of_Kiev
Iziaslav Yaroslavich (1024 – 3 October 1078, baptized as Demetrius) Kniaz' (Prince) of 
Turov, Veliki Kniaz (Grand Prince) of Kiev (from 1054).

Izyaslav's children Yaropolk and Sviatopolk would rule the Turov Principality. Their 
authority was mainly challenged by the Rostilavichi of Rostislav Vsevolodovich.
Biography[edit]

Iziaslav was the oldest son of Yaroslav I the Wise by his second wife Ingigerd 
Olafsdottir. Iziaslav succeeded his father, after Yaroslav's oldest child, Vladimir (the 
only child by Yaroslav's first wife), had predeceased his father. Iziaslav was one of the 
authors of "Pravda Yaroslavichiv" – a part of the first legal code of Rus, called 
Russkaya Pravda.

He is also credited with the foundation of the Kiev Pechersk Monastery. Prince 
Iziaslav I of Kiev ceded the whole mountain to Antonite monks who founded a 
monastery built by architects from Constantinople. According to the Primary Chronicle, 
in the early 11th century, Antony, a Greek Orthodox monk from Esphigmenon 
monastery on Mount Athos, originally from Liubech in the Principality of Chernigov, 
returned to Rus' and settled in Kiev as a missionary of the monastic tradition to Kievan 
Rus'. He chose a cave at the Berestov Mount that overlooked the Dnieper River and 
a community of disciples soon grew.

In 1043 his father Veliki Kniaz (Grand Prince) Yaroslav made an agreement with King 
Casimir I of Poland that recognized Cherven as part of Kiev. The agreement was 
sealed with a double marriage—Casimir to Dobronega, Yaroslav's sister; and Iziaslav to 
Gertrude, Casimir's sister.[1] From this marriage were born three children: Iziaslav's 
son Yaropolk, Mstislav and Sviatopolk. Upon the death of Yaroslav the Wise, his 
realm was divided between three of his older sons (Vladimir of Novgorod died before 
that), Izyaslav, Sviatoslav, and Vsevolod, creating the Yaroslavichi triumvirate that 
ruled the country for the next 20 years.

As a result of the popular uprising in 1068, Iziaslav was deposed and fled to Poland.
[1] In 1069 he retook Kiev with the help of the Polish army; however, he was ousted 
again by his brothers in 1073. Iziaslav turned to the German king Henry IV, Holy 
Roman Emperor, Polish king Boleslaw II the Bold, and Pope Gregory VII, for help on 
several occasions. Iziaslav became the first King of Rus' in 1075 when the Pope sent 
him a crown. He succeeded in retaking Kiev once again in 1076, but soon died in an 
internecine war against Princes Oleg Sviatoslavich and Boris Vyacheslavich.

Children[edit]

Iziaslav had the following children with Gertrude:
Yaropolk
Mstislav (?–1069), was a Prince of Novgorod (1054–1067) which he lost to Vseslav of 
Polotsk. He had a son Rostislav Mstislavich that died in 1093.
Eupraxia, may have been married to Mieszko Boleslawowic, son of Boleslaw II the 
Bold in 1088.
Sviatopolk

Parents
WLADIMIROWWITSCH Jaroslaw (Jaroslav) (Yaroslav) I "the Wise" Mudry ( 980 - 20 Feb 1054)
OLAFSDOTTIR Ingegerd (Ingegreda) (1001 - 10 Feb 1050)

Siblings
YAROSLAVNA Anastasiya Agmunda (1022 - AFT 1074)
YAROSLAVICH Isjarlaw (Isiaslaw) Izyaslav I Dmitrij (1025 - 3 Oct 1078)
YAROLAVOVIC Vsevolod I (Wsewolod) (1030 - 13 Apr 1093)
YAROSLAVNA Anna Agnesa (1036 - 1075)

Marriage To OF POLAND Gertrude (Gertruda) (ABT 1020 - 4 Jan 1108)
    m. ABT 1043 

Notes

Parents
____ Mieszko (Mieszylaw) II (ABT  990 - 10 May 1034)
OF PFALZ-LORRAINE Richenza (Rixa) (ABT  995 - 21 Mar 1063)

Children by OF POLAND Gertrude (Gertruda) ABT 1020 - 4 Jan 1108
MIKHAIL ISJASLAWITSCH Sviatpolk (Svyatopolk) (Swjatopolk) II (1050 - 16 Apr 1113)

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