Remembrance Day Orthodox/Catholic: 15. July
Name means: the peaceful ruler (Russian)
Grand Duke of Kiev
* around 956 in Kiev, Ukraine
† 15 July 1015 in Berestov near Kiev in Ukraine
Vladimir Svjatoslavič, an illegitimate son of Prince Svjatoslav of the Rurikid family and grandson of Olga, became Prince of Novgorod – today’s Velikiy Novgorod – in 970, but soon had to flee to Sweden because of inheritance disputes. In 979/80 he was able to return and fought against his brother for the rule of all of Russia from Ukraine to the Baltic Sea; his victory and his accession to power as Grand Duke of Kiev also meant a victory of the Paganism versus the newly infiltrated Christian faith. Although Kiev was already partly Christian, he remained a pagan and had seven wives. Emissaries of the Catholic Church from Rome and the Orthodox Church from Constantinople – today’s Ístanbul – as well as Judaism and Islam tried to win Vladimir over to their faith; the Jew and the Muslim were expelled from the country for mentioning circumcision, pork and alcohol bans; the representative from Rome was no different after his remark, that lent would be imposed on the faithful. Vladimir died on a trip to Velikiy Novgorod. Since 1853, an imposing, 24-meter-high monument on the banks of the Dnieper river in Kiev commemorates Vladimir / Volodymyr, since 2016 also one with a height of 17 meters in Moscow. According to traditional opinion, Vladimir was canonized by the Orthodox Church after 1250 , according to recent finds probably already in the 11th century.
Joachim Schäfer: Article By Vladimir I of Kiev, from the Ecumenical Dictionary of Saints – https://www.heiligenlexikon.de/BiographienW/Wladimir_von_Kiew.html