Information about Euripides Souris.

Would anyone know anything about a Euripides Souris? He worked for my father Jim Black (Mavromatis) in the Rosary Cafe in Gayndah, Queensland Australia, before WW2. He then joined the army & was sent to New Guinea, where he was killed in action. I have a faint recollection of him & have what I think is a photo of him. I'm sure he was not married. I have often wondered what his connection to our family might have been.