The back row appears to be the Combis Brothers (Grecian Gladiators), John (1870), Theodoros b.1882, and Athanasios (1885-1971).
I believe the man seated on the left is Michali Patrikios, husband of Marigo Combis, who is seated in the middle, and on the right I believe is Kyriakos Combis (1876-1920) but I would appreciate if someone could confirm the identities these people.
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The photo was a part of the archive of photos of the family of Diamandis Haralambos Chlentzos (1874-1969)
See also: http://www.kythera-family.net/en/photos/diaspore-working-life/athanasios-theodore-combis-apostolos-combis
