Natural causes
Constantine of Strathclyde died in 640.
Constantine Hangerli died in 1799.
Jimmy Constantine died in 1998.
Constantine Lascaris died in 1501.
Constantine Phaulkon died in 1688.
Constantine I of Imereti died in 1327.
Constantine Diogenes died in 1032.
Constantine Lekapenos died in 946.
Constantine Bohachevsky died in 1961.
Constantine I of Kakheti died in 1605.
Constantine Paparrigopoulos died in 1891.
Constantine IV died in 685.