Patriarch Grigorios V of Constantinople was an Eastern Orthodox prelate who served as the Ecumenical Patriarch during three separate periods between 1797 and 1821. Born Georgios Angelopoulos in Dimitsana, he underwent extensive theological studies in Athens and Smyrna before rising through the ecclesiastical ranks. He is notably remembered for his efforts to restore the Patriarchal Cathedral of St George. His leadership concluded tragically during the Greek War of Independence, when he was executed by Ottoman authorities in Istanbul.