Background
He was born in Guebwiller, Alsace, then part of France but later annexed to Germany.
He was born in Guebwiller, Alsace, then part of France but later annexed to Germany.
From 1863 he studied medicine in Paris.
His Numismatique de l"Orient Latin (1878-1882) is still considered the principal work on the coinage of the crusades. A large portion of his extensive Crusader coin collection is housed in the Cabinet des Médailles a department of the Bibliothèque nationale de France in Paris. During the Franco-Prussian War, he served on the French side as a medic.
In 1871 he returned to Paris, and was awarded a doctorate in 1872 for a thesis on the respiratory tract.
After this he travelled extensively in North Africa, Syria, Asia Minor, Spain, Portugal, Switzerland and Italy (visiting also Germany) and then turned to research into the history of the Crusader states and the Byzantine Empire. He was elected president of the Societé des Antiquaires de France.
In 1903 he was awarded the Medal of the Royal Numismatic Society. He also corresponded extensively with the Greek writer Penelope Delta, which correspondence influenced several of her historical novels set in Byzantine times.
He was an ultra-conservative, an active supporter of the anti-Dreyfusard movement.
In his memoirs, Schlumberger, who received a passing mention in Proust"s À la recherche du temps perdu, described the novelist as "bizarre" and described his books as "admired by some, and quite incomprehensible to others, including myself". The Académie des Inscriptions et Belles-Lettres has created an award in his name, the Gustave Schlumberger Prize. Winners have included Joshua Prawer and Denys Pringle.
Bavarian Academy of Sciences and Humanities. Academy of Sciences of the Union of the Soviet Socialist Republics. Hellenic Philological Society of Constantinople.
Académie des Inscriptions et Belles-Lettres]
In 1884 he was elected a member of the Académie des Inscriptions et Belles-Lettres. In his memoirs, he wrote of his old friend Charles Haas (a model for Marcel Proust"s character Swann): "The delightful Charles Haas, the most likeable and glittering socialite, the best of friends, had nothing Jewish about him except his origins and was not afflicted, as far as I know, with any of the faults of his race, which makes him an exception virtually unique." Following his failure to be elected a member of the Académie française in 1908, Proust, who disliked him, described him as a "disabused pachyderm".