He acquired the reputation of well-educated scholar and upon the death of Metropolitan Theopemptus in 1049, Hilarion was proclaimed the metropolitan of Kiev by Yaroslav the Wise, the Grand prince of Kiev, who thus challenged the old Byzantine tradition of placing Greeks on the episcopal sees.
Luka opposed the Kyivan Grand Princes' appointments of Hilarion and Efrem as metropolitans of Kyiv, not simply to oppose Kyiv, but because it was the prerogative of the Patriarch of Constantinople to name the Kyivan metropolitan.
Hilarion of Kiev, 11th century Russian churchman, became Metropolitan of Kiev
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On his return, Anthony found a small 4-yard cave which Hilarion had dug before his elevation as the first native Metropolitan of Kiev.