Hilarion is a male form of a Latin-derived name, related to the name Hilary which in modern times is mainly feminine.
Hilarion, an anchorite who spent most of his life in the desert according to the example of Saint Anthony of Egypt
Hilarion Alfeyev (born 1966), orthodox bishop, church historian, and composer
Hilarion of Kiev (11th century), Russian bishop
Hilarion Vendégou, high chief of the Isle of Pines, in New Caledonia
Master Hilarion, an Ascended Master of Theosophy
Metropolitan Ilarion or Hilarion, various Eastern Orthodox bishops
Prince Hilarion, one of the protagonists in the Gilbert & Sullivan comic opera Princess Ida
Anne Hilarion de Tourville (1642-1701), French naval commander
Auguste Hilarion, comte de Kératry (1769-1859), French poet, novelist, short story writer, literary critic, historian, and politician
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