Wikipedia
Hilarion (291–371) was an anchorite who spent most of his life in the desert according to the example of Anthony the Great.
Hilarion Alfeyev (born Grigoriy Valerievich Alfeyev; 24 July 1966) is a bishop of the Russian Orthodox Church. At present he is the Metropolitan of Volokolamsk, the chairman of the Department of External Church Relations and a permanent member of the Holy Synod of the Patriarchate of Moscow. He is also a noted theologian, church historian and composer and has published books on dogmatic theology, patristics and church history as well as numerous compositions for choir and orchestra.
Hilarion is a male form of a Latin-derived name, related to the name Hilary which in modern times is mainly feminine.
Ilarion (Rudnyk) of Edmonton is the diocesan or ruling bishop of the Western Eparchy of the autonomous Ukrainian Orthodox Church of Canada.
Archimandrite Ilarion (, – 29 May, 2008) was a priest of the Russian Orthodox Church. He mostly served in Novgorod Oblast in the small village of Bronnitsa. There, he became widely known as a spiritual father, and many faithful attributed powers of clairvoyance and healing to him. The Russian Church is currently considering him for canonization.