[1] Having begun his education in his hometown of Lyon, Chalandon moved to Paris and graduated from the Lycée Louis-le-Grand.

[3] He subsequently spent two years in Italy with the École française de Rome, travelling widely, in particular across the South where he transcribed documents from monastic and capitular archives.

Building on his study of Alexios Komnenos, in 1912 he published a lengthy monograph on his successors, John II and Manuel I.

His interest in the Middle East led to a collaboration with Gustave Schlumberger on Sigillographie de l'Orient latin, a project which Chalandon took over and brought to near completion by the time of his premature death in 1921 from health problems contracted during World War I.

[7] His history of the First Crusade was prepared from his notes by his wife, who also worked extensively on the Sigillographie before its final revision by Adrien Blanchet.