Agamemnon Schliemann was born on 16 March 1878 in Paris, France to German-American businessman and amateur archaeologist Heinrich Schliemann and his Greek wife Sophia Schliemann. He was baptized by his father himself, although he was reluctant about it. He was educated in France and Germany. During a trip to the United States in 1900, he established his American citizenship.
In 1902, at the age of 24 years he married 16 year old Nadine de Bornemann, daughter of a wealthy businessman in a civil ceremony in New York City, which made it onto the New York Times front page (Eloped from France, Made to marry here). She was the Athens-born daughter of a wealthy Danish businessman.
From 1902-1903 he lived in the US. Returning to Thessaly Greece, where he owned a large amount of land, he became the deputy of Larissa in the Hellenic parliament. In January 1914, Schliemann was appointed Greek ambassador to the United States in Washington D.C. in succession to L. A. Coromilas.
- "To Be New Greek Minister. M. Schliemann, Son of the Famous Scholar, Coming to America". The New York Times. January 8, 1914. Retrieved 2011-01-26.
Agamemnon Schliemann, who represents Larissa in the Greek Chamber of Deputies, was to-day appointed Minister at Washington in succession to L. A. Coromilas, according to a telegram from Athens.
- "Bryan Testifies". The Pittsburgh Press. January 5, 1916. Retrieved 2011-01-26.
... that while secretary of state he had seen any letter written to influence him against Agamemnon Schliemann, former Greek minister to the United States. ...
- "Son of Ancient Troy's Excavator Got His Parisienne. Agamemnon Schliemann and Nadine de Bornemann Induced to Undergo a Civil Ceremony by Family Lawyers". The New York Times. June 22, 1902. Retrieved 2011-01-26.