He fought at Tripolitsa, Peta, Missolonghi,and elsewhere. During the Greek civil wars of 1824–1825, he joined with many chiefs of the Peloponnese and Hydra and convinced Theodoros Kolokotronis to join them by offering his daughter in marriage to one of Kolokotronis' sons. In the second round of the civil war, he was imprisoned along with Kolokotronis by the provisional government of Georgios Kountouriotis. After Independence, he became a speaker of the Greek Parliament in 1844–1845.
Deligiannis also wrote memoirs, which are considered controversial, as they seek to justify his father's pro-Turkish stance as being beneficial for the Greek population. His memoirs also portray the rivalries of the various groups and the leading families of the Peloponnese before and during the Revolution.
