He was initiated into Filiki Eteria in Corinth during 1818. He, in turn initiated several other Corinthians to Filiki Eteria, including Panoutsos Notaras. He participated several events of the Greek War of Independence including the Battle of Dervenakia.
Kitromilides" view was backed up by K. Papachristos who brought more evidence to support the view that George Kalaras was the anonymous author/publisher of the Hellenic Nomarchy.
He had three sons that he named Harmodius and Aristogeiton after the well known Athenian tyrannicides, and a third one, Thrasyboulos. He died of pneumonia on 23 December 1824, during a diplomatic mission.
Paschalis Kitromilides in his treatise "From Republican Patriotism to National Sentiment" considers George Kalaras as a possible editor of the Hellenic Nomarchy, as Kalaras printed his University thesis, "A general idea of some qualities of the bodies and on the nature of qualities of temperature" at the printing workshop of Tommasso Mazi at Livorno in Italy during 1806, where it is believed that the Hellenic Nomarchy may also have been printed, at approximately the same period of time.
George Kalaras was a member of the Second National Assembly in March 1823, as one of the representatives of Corinthia.