Background
He was born in Ottoman occupied Gjirokastër, in modern Albania.
He was born in Ottoman occupied Gjirokastër, in modern Albania.
He was the brother of Alexandros Vasileiou, merchant, scholar and student of Adamantios Korais, a major figure of the Greek Enlightenment movement. He supported financially several issues of the Hermes o Logios (Greek: Λόγιος Ερμής) literary newspaper, published in Vienna as well the Greek translation of the French codex for merchants (Greek: Γαλλικός κώδιξ για εμπόρους, in 1817).
Michael Vasileiou ran his trade business in Constantinople (modern Istambul), where he lived most of his life and succeeded in becoming one of the most successful businessmen among the members of the Greek community in the Ottoman capital.